Question

Jose has 43 quarters and nickels in his piggy bank. If his change is worth $7.75,

how many of each type of coin does he have?

Answer 1

15 nickels

28 quarters

Explanation:

system of equations:

q + n = 43

.25q + .05n = 7.75

q = 43-n Use Substitution Method:

.25(43-n) + .05n = 7.75

10.75 - .25n + .05n = 7.75

-20.n = -3

n = 15

q = 43-15 or 28