Quantcast

Got Homework?

Connect with other students for help. It's a free community.

  • across
    MIT Grad Student
    Online now
  • laura*
    Helped 1,000 students
    Online now
  • Hero
    College Math Guru
    Online now

Here's the question you clicked on:

55 members online
  • 0 replying
  • 0 viewing

waheguru Group Title

Can someone please help me with this problem, I do not understand how to solve

  • one year ago
  • one year ago

  • This Question is Closed
  1. waheguru Group Title
    Best Response
    You've already chosen the best response.
    Medals 0

    • one year ago
    1 Attachment
  2. waheguru Group Title
    Best Response
    You've already chosen the best response.
    Medals 0

    How do i solve this?

    • one year ago
  3. Azteck Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    Let the part of it that's being invested at a rate of 5% per annum be x. Let he other part that's being invested at 7.2% "5000-x".

    • one year ago
  4. waheguru Group Title
    Best Response
    You've already chosen the best response.
    Medals 0

    can it not also be y ?

    • one year ago
  5. Azteck Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    Why would you want two variables when you can solve it using one? Do you want to make your life harder?

    • one year ago
  6. waheguru Group Title
    Best Response
    You've already chosen the best response.
    Medals 0

    Its because i am learning graphing at the moment so i thought there would be y in there

    • one year ago
  7. Azteck Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    Does the question have the word sketch/draw or graphically in it?

    • one year ago
  8. waheguru Group Title
    Best Response
    You've already chosen the best response.
    Medals 0

    no

    • one year ago
  9. Azteck Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    Then what kind of reason was that?... Now let's continue on with the question rather than giving random excuses as to what you're learning.

    • one year ago
  10. waheguru Group Title
    Best Response
    You've already chosen the best response.
    Medals 0

    sorry

    • one year ago
  11. Azteck Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    Write 5% as a decimal.

    • one year ago
  12. Azteck Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    Also write 7.2% as a decimal.

    • one year ago
  13. waheguru Group Title
    Best Response
    You've already chosen the best response.
    Medals 0

    0.05

    • one year ago
  14. waheguru Group Title
    Best Response
    You've already chosen the best response.
    Medals 0

    0.072

    • one year ago
  15. Azteck Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    Sorry I meant fraction. My apologies.

    • one year ago
  16. waheguru Group Title
    Best Response
    You've already chosen the best response.
    Medals 0

    50/1000 75/1000

    • one year ago
  17. Azteck Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    Make it into the simplest form please. If you don't know how to simplify fractions into its simplest form, then I suggest you use your calculator.

    • one year ago
  18. waheguru Group Title
    Best Response
    You've already chosen the best response.
    Medals 0

    1/20 and 3/40

    • one year ago
  19. Azteck Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    75?

    • one year ago
  20. Azteck Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    The question says 7.2%....not 7.5%....

    • one year ago
  21. waheguru Group Title
    Best Response
    You've already chosen the best response.
    Medals 0

    9/125

    • one year ago
  22. Azteck Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    You only got one correct. Please rewrite 7.2% as a fraction again please.

    • one year ago
  23. Azteck Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    Yep you're correct.

    • one year ago
  24. Azteck Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    Sorry about that, my comp lagged out.

    • one year ago
  25. Azteck Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    Okay now. Do you agree that (x times 5%)+[(5000-x) times 7.2%)]=349?

    • one year ago
  26. waheguru Group Title
    Best Response
    You've already chosen the best response.
    Medals 0

    yes

    • one year ago
  27. Azteck Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    Okay, now change the 5% and 7.2% into the fractions you wrote previously and show me your equation.

    • one year ago
  28. waheguru Group Title
    Best Response
    You've already chosen the best response.
    Medals 0

    1/20 x + 9/25 (5000-x) = 349

    • one year ago
  29. Azteck Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    Yep great! Excellent.

    • one year ago
  30. Azteck Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    Now. You just figured the equation that would lead you to finding x. \[\frac{ x }{ 20 }+\frac{ 9(5000-x) }{ 125 }=349\]

    • one year ago
  31. waheguru Group Title
    Best Response
    You've already chosen the best response.
    Medals 0

    oh... yea

    • one year ago
  32. Azteck Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    It's 125.

    • one year ago
  33. Azteck Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    I'm just letting you go for just writing 25 but I will let you go this time due to the probability of that being a typo.

    • one year ago
  34. waheguru Group Title
    Best Response
    You've already chosen the best response.
    Medals 0

    yea

    • one year ago
  35. Azteck Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    Okay, so when you get rid of the fractions by multiplying both sides with the Lowest common multiple, tell me what you get.

    • one year ago
  36. waheguru Group Title
    Best Response
    You've already chosen the best response.
    Medals 0

    500 LCD

    • one year ago
  37. Azteck Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    yep.

    • one year ago
  38. Azteck Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    Multiply by 500 to both sides.

    • one year ago
  39. Azteck Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    Tell me what you get. Afterwards, you would have to expand/distribute the brackets/paranthesis.

    • one year ago
  40. waheguru Group Title
    Best Response
    You've already chosen the best response.
    Medals 0

    Ill do that, but just for knowledge this can also be answered by using the decimals (0.05 and 0.075) right

    • one year ago
  41. waheguru Group Title
    Best Response
    You've already chosen the best response.
    Medals 0

    i ment 0.072

    • one year ago
  42. Azteck Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    Yea of course.

    • one year ago
  43. Azteck Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    I just reckon fractions are clearer and you would understand a bit better.

    • one year ago
  44. Azteck Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    So what did you get?

    • one year ago
  45. waheguru Group Title
    Best Response
    You've already chosen the best response.
    Medals 0

    I find fractions a bit difficult so i did decimals, 0.05x + 0.072(5000-x) = 349

    • one year ago
  46. waheguru Group Title
    Best Response
    You've already chosen the best response.
    Medals 0

    0.05x + 360-0.072x = 349

    • one year ago
  47. Azteck Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    Okay...Well then expand/distribute the brackets/paranthesis...

    • one year ago
  48. waheguru Group Title
    Best Response
    You've already chosen the best response.
    Medals 0

    and 0.05x - 0.072 = -11

    • one year ago
  49. Azteck Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    Where's the x gone mate?

    • one year ago
  50. waheguru Group Title
    Best Response
    You've already chosen the best response.
    Medals 0

    sry (you are am amazing teacher you can catch the slighest mistakes =) 0.05x - 0.072x = -11

    • one year ago
  51. Azteck Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    Okay collect likes terms. That means group the x's together.

    • one year ago
  52. Azteck Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    like terms*

    • one year ago
  53. waheguru Group Title
    Best Response
    You've already chosen the best response.
    Medals 0

    -0.022x = -11

    • one year ago
  54. waheguru Group Title
    Best Response
    You've already chosen the best response.
    Medals 0

    x= -11/-0.022

    • one year ago
  55. waheguru Group Title
    Best Response
    You've already chosen the best response.
    Medals 0

    x = 500

    • one year ago
  56. waheguru Group Title
    Best Response
    You've already chosen the best response.
    Medals 0

    wow

    • one year ago
  57. Azteck Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    Yep and then what do you get for the other one.

    • one year ago
  58. Azteck Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    ?*

    • one year ago
  59. Azteck Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    There's two parts.

    • one year ago
  60. Azteck Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    That's the first part where it was invested at a rate of 5% p.a

    • one year ago
  61. Azteck Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    So what about the part where it was invested at a rate of 7.2%?

    • one year ago
  62. waheguru Group Title
    Best Response
    You've already chosen the best response.
    Medals 0

    4500 the rest of the money

    • one year ago
  63. Azteck Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    Correct. Awesome.

    • one year ago
  64. waheguru Group Title
    Best Response
    You've already chosen the best response.
    Medals 0

    wow, you are just an amazing teacher. thank you soo much

    • one year ago
  65. Azteck Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    I will show what I did using fractions. This just give you a look at a different perspective in solving these. \[25x+36(5000-x)=174500\] \[25x+180000-36x=174500\] \[11x=180000-174500\] \[11x=5500\] \[x=500\]

    • one year ago
  66. Azteck Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    And no worries. Good work.

    • one year ago
  67. waheguru Group Title
    Best Response
    You've already chosen the best response.
    Medals 0

    Mr, Aztech are you usually available at this time so I can ask you for help

    • one year ago
  68. Azteck Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    Not all the time. I'm also busy with my own work. So some days I will be off doing my work and other days I will be resting and so on. This is only just a bit of fun to help others with their homework.

    • one year ago
  69. waheguru Group Title
    Best Response
    You've already chosen the best response.
    Medals 0

    Thankyou sir

    • one year ago
    • Attachments:

See more questions >>>

Your question is ready. Sign up for free to start getting answers.

spraguer (Moderator)
5 → View Detailed Profile

is replying to Can someone tell me what button the professor is hitting...

23

  • Teamwork 19 Teammate
  • Problem Solving 19 Hero
  • You have blocked this person.
  • ✔ You're a fan Checking fan status...

Thanks for being so helpful in mathematics. If you are getting quality help, make sure you spread the word about OpenStudy.

This is the testimonial you wrote.
You haven't written a testimonial for Owlfred.