A community for students.

Here's the question you clicked on:

55 members online
  • 0 replying
  • 0 viewing

anonymous

  • 5 years ago

percent increase or decrease : before 40 after 65 what are the steps to do this i forgot???

  • This Question is Closed
  1. karatechopper
    • 5 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    amount of change/ original

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

    so it would be 65-40/40

  3. anonymous
    • 5 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    so its 40/65??

  4. karatechopper
    • 5 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    15/40

  5. karatechopper
    • 5 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    simplify that..3/8

  6. karatechopper
    • 5 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    use a calculator...

  7. karatechopper
    • 5 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    3/8=0.375 move decimal 2 steps to right 37.5% increse

  8. anonymous
    • 5 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    8/13????

  9. karatechopper
    • 5 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    nooo

  10. karatechopper
    • 5 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    lets take this step by step k?

  11. anonymous
    • 5 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    ok

  12. karatechopper
    • 5 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    so the formula is change in amount/ orginal

  13. karatechopper
    • 5 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    so the change in amount is the change between 65 and 40 so 65-40/original

  14. karatechopper
    • 5 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    and the original is 40, because u said before.

  15. karatechopper
    • 5 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    so now the equation is 65-40/40

  16. karatechopper
    • 5 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    so if u simplify that... it is 15/40

  17. karatechopper
    • 5 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    and if i simplify that to work with better, it becomes 3/8

  18. karatechopper
    • 5 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    then i use the calculator asking what 3/8 is..

  19. karatechopper
    • 5 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    it says 3/8=0.375

  20. karatechopper
    • 5 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    and since u are looking for percent i move the decimal 2 steps to the right.

  21. karatechopper
    • 5 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    so not 3/8= 37.5%

  22. karatechopper
    • 5 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    and if u are counting from 40 to 65, u are INCREASING your count...

  23. karatechopper
    • 5 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    therefore it is a 37.5% increase

  24. karatechopper
    • 5 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    get it?

  25. anonymous
    • 5 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    im stuck at where i subtract then what do i do?

  26. anonymous
    • 5 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    Percentage Increase or Decrease \[=\frac{amount.of.change}{original.price} \times100\]\[=\frac{NP-OP}{OP} \times 100\] where NP is your new price and OP is the old price

  27. anonymous
    • 5 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    so in your question what was the old price and what was the new price?

  28. anonymous
    • 5 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    40 old price new price 65

  29. anonymous
    • 5 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    okay good so OP=40 and NP=65. try and put these values into the equation i gave above and what answer do you get?

  30. anonymous
    • 5 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    so i subtract 65 -40 and i get 25 then what do i do multiply with 100?

  31. anonymous
    • 5 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    well let's multiply by 100 last because all that does is change our answer to percentage. so you have 25 now you need to divide by the original price

  32. anonymous
    • 5 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    0.625 i got

  33. anonymous
    • 5 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    good now the last step is to times by 100

  34. anonymous
    • 5 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    62.5

  35. anonymous
    • 5 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    perfect so your answer is 62.5%

  36. anonymous
    • 5 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    so how do i know if its increasing or decreasing?

  37. anonymous
    • 5 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    if the percentage is positive it's increasing if it's negative it's decreasing

  38. anonymous
    • 5 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    thanks!!!!!!!!!! ALOT!

  39. anonymous
    • 5 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    no worries (:

  40. Not the answer you are looking for?
    Search for more explanations.

    • Attachments:

Ask your own question

Sign Up
Find more explanations on OpenStudy
Privacy Policy

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.