A community for students.

Here's the question you clicked on:

55 members online
  • 0 replying
  • 0 viewing

anonymous

  • 5 years ago

Fungai steps into the supermarket to buy a candle. A candle costs 29 cents. She has a $2 note, and the shopkeeper has 5 cent and 6 cent coins only in his till. If Fungai is to get her change in these denominations, what is the largest product she can obtain after multiplying the number of 5 cent coins by the number of 6 cent coins in her change? The solution starts with the equation 6x + 5y = 171. Where did they get 171

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

    171 +29 = 200

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

    6/100 = .06 cents 5/100 = .05 cents 200/100 = $2.00

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

    .06x + .05y = 1.71 times 100 to vacate the decimal points

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

    If she buys just one candle, then remaining is 200 cents - 29 cents = 171 cents

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

    her change (1.71) consists of how many (.06) and how many (.05)?

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

    Do u hv the answer??? Is it 15 coins of 5 cents and 16 coins of 6 cents their product is 15 x 16 =240 ??????

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

    @iamignorant Is my suggested answer right???

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

    Yes you are right Harkirat

  9. amistre64
    • 5 years ago
    Best Response
    You've already chosen the best response.
    Medals 2

    6s + 5f = 171 M = sf ; f= (-6s +171)/5 M = s[(-6s +171)/5] M = (-6s^2 +171s)/5 M' = (-12s +171)/5 M' = 0 when s = 171/12 = 14.25; so its close to that when six cent = 14 or 15 looks to be the options; and Hark decided that fate :)

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

    My logic goes as follows: one 5 cent coin and one 6 cent coin together make 11 cents If we divided 171 by 11, we get Quotient as 15 and remainder is 6 This means that if she gets 15 coins of 5 cents and 15 coins of 6 cents then remainder is 6 cents So we can say that if she has 15 coins of 5 cents it is = 75 cents and 15 + 1 coins of 6 cents ie 16 coins of 6 cents it is = 96 cents 75 + 96 = 171 so product of number of coins is 15 x 16 = 240 Hope it explains how I arrived at the solution......!!!

  11. 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.