Problema Solution
Maria has a total of 7.70 in dimes and quarters in her purse. The number of dimes she has is 5 more than 2 times the number of quarters. How many of each type of coin does she have?
Answer provided by our tutors
let 'q' represent the number of quarters, then '2q+5' represents the number of dimes
7.70 = .25q + .1(2q+5)
solving for 'q' we have q=16
2*16 + 5 = 37
Maria has 16 quarters and 37 dimes