A community for students.

Here's the question you clicked on:

55 members online
  • 0 replying
  • 0 viewing

KJ4UTS

  • one year ago

1. A company has determined that the number of items it sells varies inversely as the price of the item. If 20,000 items can be sold if the price is $9.50, how many items can be sold of the price is $8.75? Round your answer to the nearest whole number. 2. The time, T, for a car to travel from Macon to Atlanta is inversely proportional to the speed, R. If it takes 1.75 hours to travel between the two cities at 55 mph, find (in hours) the time to travel between the two cities at 70 mph. It would take ____ hours to travel from Macon to Atlanta. Round your answer to two decimal places.

  • This Question is Closed
  1. KJ4UTS
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

  2. KJ4UTS
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    @welshfella is this similar to the previous problem, how would I set these up?

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

    inverse variation is like y = k/x y = 20,000 and x = 9.50 plug these 2 values into the equation and calculate k Then plug in the value of k you just found and put x = 8.75. Then you can work out the new number of items to be sold.

  4. KJ4UTS
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    20,000/9.50 = 2105.263

  5. KJ4UTS
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    Oh I made a mistake hold on

  6. welshfella
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    No 20,000 = k / 9.50 now solve for k

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

    - you need to multiply both sides of the equation by 9.5

  8. KJ4UTS
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    190,000

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

    |dw:1444157521890:dw|

  10. welshfella
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    right

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

    now you have y = 190,000/8.75

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

    - i have replace k by 190,000

  13. KJ4UTS
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    190,000/8.75=21,714.285

  14. welshfella
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    right - of course you need to round that down to 21,714

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

    gtg right now

  16. KJ4UTS
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    Ok thanks :)

  17. 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.