A community for students.

Here's the question you clicked on:

55 members online
  • 0 replying
  • 0 viewing

anonymous

  • 5 years ago

The price of a gallon of unleaded gas has dropped to $2.81 today. Yesterday's price was $2.86 . Find the percentage decrease. Round your answer to the nearest tenth of a percent.

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

    how do i add fractions?

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

    To find the percentage decrease, you need to first find the decrease, and then find how much that is in relationship to the original value. It dropped from $2.86 to $2.81, so the decrease is $0.05. You divide the decrease, $0.05, with the original price, $2.86, to find the percentage decrease. Multiply that value by 100 to get the value in percent.

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

    I'm still bad with that kind of percents, but I kept a few notes on how to find the whole, part, or percent of a number. I think you divide the part by the whole.

  4. amistre64
    • 5 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    part/whole = decimal percentage; x100 to get a normal percentage number

  5. amistre64
    • 5 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    2.81 1- ---- = decimal percentage 2.86 decimal(100) = normal looking percentage :)

  6. amistre64
    • 5 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    1.74... %

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

    I divide the part by the whole then move the decimal 2 places to the right, which then becomes the percent.

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

    of course then I would round the answer.

  9. amistre64
    • 5 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    moving the decimal is not really a mathmatical solution; its more of a memory device :) but yes...

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

    Heh, just something my teacher taught me. If there's a more precise way, I don't know it yet XD

  11. amistre64
    • 5 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    for example: .26 = 26/100 26 ---- (100) = 26 is the math way; the memory way is 100 'move the decimal'

  12. 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.