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

kaiteDID Group Title

Use the three steps to solve the problem. Two years ago a father was four times as old as his son. Three years from now the father will be only three times as old as the son. How old is each now? {son is yrs., father is yrs.}

  • 2 years ago
  • 2 years ago

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

    Let the present age of son be x and the age of father be y. Can u tell me what was the age of the father two yrs ago?

    • 2 years ago
  2. kaiteDID Group Title
    Best Response
    You've already chosen the best response.
    Medals 0

    no i dont know i am srry

    • 2 years ago
  3. ajprincess Group Title
    Best Response
    You've already chosen the best response.
    Medals 0

    Subtract 2 from the present age y.

    • 2 years ago
  4. kaiteDID Group Title
    Best Response
    You've already chosen the best response.
    Medals 0

    so it would be 2-y*4 right?

    • 2 years ago
  5. ajprincess Group Title
    Best Response
    You've already chosen the best response.
    Medals 0

    hmm no. The age of father two yrs ago is y-2. And the son,s is x-2. Since it is given that the father's age was 4 times the age of son y-2=4(x-2). Getting it?

    • 2 years ago
  6. kaiteDID Group Title
    Best Response
    You've already chosen the best response.
    Medals 0

    kinda

    • 2 years ago
  7. ajprincess Group Title
    Best Response
    You've already chosen the best response.
    Medals 0

    Is it confusing? If so plz ask.

    • 2 years ago
  8. kaiteDID Group Title
    Best Response
    You've already chosen the best response.
    Medals 0

    yes it's confusing

    • 2 years ago
  9. ajprincess Group Title
    Best Response
    You've already chosen the best response.
    Medals 0

    How old are u nw?

    • 2 years ago
  10. ajprincess Group Title
    Best Response
    You've already chosen the best response.
    Medals 0

    what was ur age before two yrs?

    • 2 years ago
  11. ajprincess Group Title
    Best Response
    You've already chosen the best response.
    Medals 0

    U subtracted to frm ur present age to find the age bfore 2 yrs. right?I assumed father's present age to be y. then his age before two yrs wud have been y-2. Is is it clear?

    • 2 years ago
  12. kaiteDID Group Title
    Best Response
    You've already chosen the best response.
    Medals 0

    yes

    • 2 years ago
  13. ajprincess Group Title
    Best Response
    You've already chosen the best response.
    Medals 0

    The age of the son bfore two yrs wud hav been x-2. Getting it?

    • 2 years ago
  14. kaiteDID Group Title
    Best Response
    You've already chosen the best response.
    Medals 0

    mmhhh

    • 2 years ago
  15. ajprincess Group Title
    Best Response
    You've already chosen the best response.
    Medals 0

    sorry? isn't t clear?

    • 2 years ago
  16. kaiteDID Group Title
    Best Response
    You've already chosen the best response.
    Medals 0

    it is

    • 2 years ago
  17. ajprincess Group Title
    Best Response
    You've already chosen the best response.
    Medals 0

    Since it is given that the age of the father was 4 times the son's age y-2=4(x-2)

    • 2 years ago
  18. ajprincess Group Title
    Best Response
    You've already chosen the best response.
    Medals 0

    Getting it?

    • 2 years ago
  19. kaiteDID Group Title
    Best Response
    You've already chosen the best response.
    Medals 0

    yes

    • 2 years ago
  20. ajprincess Group Title
    Best Response
    You've already chosen the best response.
    Medals 0

    What will be the age of the father after three years?

    • 2 years ago
  21. kaiteDID Group Title
    Best Response
    You've already chosen the best response.
    Medals 0

    y+3

    • 2 years ago
  22. ajprincess Group Title
    Best Response
    You've already chosen the best response.
    Medals 0

    yup right:)

    • 2 years ago
  23. ajprincess Group Title
    Best Response
    You've already chosen the best response.
    Medals 0

    What will be the age of the son?

    • 2 years ago
  24. kaiteDID Group Title
    Best Response
    You've already chosen the best response.
    Medals 0

    x+3

    • 2 years ago
  25. ajprincess Group Title
    Best Response
    You've already chosen the best response.
    Medals 0

    Since it is given that the father's age will be three times of the age of the son y+3=3(x+3) getting it?

    • 2 years ago
  26. kaiteDID Group Title
    Best Response
    You've already chosen the best response.
    Medals 0

    okay

    • 2 years ago
  27. ajprincess Group Title
    Best Response
    You've already chosen the best response.
    Medals 0

    So u hav two eqns y-2=4(x-2) y+3=3(x+3) Can u find x and y?

    • 2 years ago
  28. kaiteDID Group Title
    Best Response
    You've already chosen the best response.
    Medals 0

    y-2=4x-8 y+3=3x=9

    • 2 years ago
  29. ajprincess Group Title
    Best Response
    You've already chosen the best response.
    Medals 0

    y-2=4x-8 y+3=3x+9 ya right:). Nw solve these equations to find x and y. can u do it?

    • 2 years ago
  30. kaiteDID Group Title
    Best Response
    You've already chosen the best response.
    Medals 0

    idk

    • 2 years ago
  31. ajprincess Group Title
    Best Response
    You've already chosen the best response.
    Medals 0

    y-2=4x-8 what do u get when u add 2 to both sides?

    • 2 years ago
  32. kaiteDID Group Title
    Best Response
    You've already chosen the best response.
    Medals 0

    10

    • 2 years ago
  33. ajprincess Group Title
    Best Response
    You've already chosen the best response.
    Medals 0

    y-2+2=4x-8+2 y=4x-6

    • 2 years ago
  34. ajprincess Group Title
    Best Response
    You've already chosen the best response.
    Medals 0

    y+3=3x+9 What do u get when u subtract 3 from both of the sides?

    • 2 years ago
  35. kaiteDID Group Title
    Best Response
    You've already chosen the best response.
    Medals 0

    12

    • 2 years ago
  36. ajprincess Group Title
    Best Response
    You've already chosen the best response.
    Medals 0

    hmm no. y+3-3=3x+9-3 y=3x+6 Getting it?

    • 2 years ago
  37. kaiteDID Group Title
    Best Response
    You've already chosen the best response.
    Medals 0

    yes

    • 2 years ago
  38. ajprincess Group Title
    Best Response
    You've already chosen the best response.
    Medals 0

    So u have two eqns y=4x-6 y=3x+6. Since both 4x-6 and 3x+6 are equal to y you can equate them. 4x-6=3x+6 Can u find x nw?

    • 2 years ago
  39. kaiteDID Group Title
    Best Response
    You've already chosen the best response.
    Medals 0

    10

    • 2 years ago
  40. ajprincess Group Title
    Best Response
    You've already chosen the best response.
    Medals 0

    hmm no. 1.Add 6 both sides 2.Subtract 3x both sides. What do u get nw?

    • 2 years ago
  41. kaiteDID Group Title
    Best Response
    You've already chosen the best response.
    Medals 0

    1x

    • 2 years ago
  42. ajprincess Group Title
    Best Response
    You've already chosen the best response.
    Medals 0

    That is vat u get in left hand side. What do u get in ur right hand side?

    • 2 years ago
  43. kaiteDID Group Title
    Best Response
    You've already chosen the best response.
    Medals 0

    0

    • 2 years ago
  44. kaiteDID Group Title
    Best Response
    You've already chosen the best response.
    Medals 0

    @robtobey can u help me?

    • 2 years ago
  45. robtobey Group Title
    Best Response
    You've already chosen the best response.
    Medals 2

    Solve the following for f and s, the father's and son's current age respectively.\[\left\{\frac{f-2}{s-2}=4,\frac{f+3}{s+3}\text{=}3\right\}\]Can you solve the above for f and s?

    • 2 years ago
  46. kaiteDID Group Title
    Best Response
    You've already chosen the best response.
    Medals 0

    idk i dont know how to do it

    • 2 years ago
  47. robtobey Group Title
    Best Response
    You've already chosen the best response.
    Medals 2

    Is the following easier?\[\{f-2=4(s-2),f+3=3(s+3)\}\]

    • 2 years ago
  48. kaiteDID Group Title
    Best Response
    You've already chosen the best response.
    Medals 0

    i dont know this is all confusing to me

    • 2 years ago
  49. robtobey Group Title
    Best Response
    You've already chosen the best response.
    Medals 2

    focus on the equation on the left. f - 2 = 4 (s - 2) Multiply out the RHS f - 2 = 4 s - 8 Move -2 to the RHS. f = 4 s - 8 + 2 Add -8 and +2 f = 4 s -6 Replace f in the second equation with 4 s -6 f + 3 = 3 (s + 3) (4 s -6) + 3 = 3 (s + 3) Can you solve the above for s and get a number?

    • 2 years ago
  50. kaiteDID Group Title
    Best Response
    You've already chosen the best response.
    Medals 0

    son is 7

    • 2 years ago
  51. robtobey Group Title
    Best Response
    You've already chosen the best response.
    Medals 2

    I have to log off now. The answer is\[\{f=42,s=12\} \] You should verify the answer yourself.

    • 2 years ago
  52. kaiteDID Group Title
    Best Response
    You've already chosen the best response.
    Medals 0

    okay

    • 2 years 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.