Here's the question you clicked on:

55 members online
  • 0 replying
  • 0 viewing

.Sam.

  • 3 years ago

Math Quiz: A country currency consists of the following coins 1¢, 2¢, 5¢, 10¢, 25¢, 50¢. What is the most money you can have in coins and not be able to pay exactly $1? It can be over a dollar

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

    Coin change problem.

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

    i guess you could have 99 1¢ pieces

  3. Limitless
    • 3 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

    This doesn't seem well-posed.

  4. .Sam.
    • 3 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

    It can be over a dollar

  5. Limitless
    • 3 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

    Then.. There is no limit on what you can pay.

  6. Limitless
    • 3 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

    Or perhaps I am not understanding correctly. You can have \(100\) 1 cent pieces, \(1000\) 1 cent pieces, \(10,000\) 1 cent pieces etc.

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

    one 50¢ and three 20¢ maybe

  8. Limitless
    • 3 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

    OH. I completely misread the sentence. My bad, yo.

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

    ohhh pop quiz *_*

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

    you can't hv 2 50's, 4 25's, 1 50's and 2 25's, 1 50's and 5 10's, 1 50 and 20 5's and so on....

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

    oh there are no 20¢ s only 25¢

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

    3×25¢ and 3×10¢ =$1.05

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

    *+4¢

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

    $1.09

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

    ans. is 124 cents?

  16. .Sam.
    • 3 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

    @UnkleRhaukus nope :) , Hint: its greater than that

  17. Limitless
    • 3 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

    50, 25, {10,10,10,10,10,10,10,10,10}, 5, {2,2} ?

  18. Limitless
    • 3 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

    oops, nope.

  19. RolyPoly
    • 3 years ago
    Best Response
    You've already chosen the best response.
    Medals 4

    First at most 1 50 cents, since 2 50 cents coins = $1 => $0.5 Then, at most 1 25 cents coin , since 2 25 cents coins = $0.5 => + 0.5 above = 1 (=> rejected) Now, we've got $0.75 We can at most 4 $0.1 coins. since 5 x $ 0.1 = $ 0.5 + 0.5 above = $1 (=> rejected) Now, we have $ 0.75 + $ 0.4 = 1.15 We CAN'T have $0.05 coin, since it 0.05 + 0.75 = 0.8 + 0.2 = 1 (=> rejected) we can have at most 4$0.02 coins, since 5x^0.02 = $0.1 and 0.1+ 0.4 = 0.5 (rejected) Now we have 1.23 No 0.01 ... 1.23?

  20. .Sam.
    • 3 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

    @RolyPoly is correct :D

  21. RolyPoly
    • 3 years ago
    Best Response
    You've already chosen the best response.
    Medals 4

    Yay!!!~

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

    50,25, 10, 10,10,10,2,2,2,2? oops 123

  23. RolyPoly
    • 3 years ago
    Best Response
    You've already chosen the best response.
    Medals 4

    *No 0.01 since 0.01 + 0.02 + 0.02 = 0.05, that is similar to 0.05 case (=> rejected)

  24. Limitless
    • 3 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

    Thanks for the nice problem, .Sam.

  25. .Sam.
    • 3 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

    np :)

  26. RolyPoly
    • 3 years ago
    Best Response
    You've already chosen the best response.
    Medals 4

    typo: we can have at most 4$0.02 coins, since 5 x 0.02 = $0.1 and 0.1+ 0.4 = 0.5 (rejected)

  27. 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