Problema Solution
Aaron has a collection of American coins. He has three times as many 10 cent coins as
25 cent coins, and he has some 5 cent coins as well. If he has 88 coins with total value
$11:40, how many of each type does he have?
Answer provided by our tutors
let 'x' represent the number of 25-cent coins, then '3x' represents the number of 10-cent coins and '88-x-3x' represents the number of 5-cent coins
11.40 = 0.05(88-x-3x) + 0.10(3x) + 0.25(x)
solving for 'x' we have x=20
3*20 = 60
88 - x- 3*20 = 8
Aaron has 8 nickels, 60 dimes and 20 quarters