A bank contains 35 coins, all nickels and quarters. The total value of coins is $8.15. How many of each coin does the bank contain?

Question

Mathematics

Amelia Wheeler

26 May, 07:21

A bank contains 35 coins, all nickels and quarters. The total value of coins is $8.15. How many of each coin does the bank contain?

+3

Answers (1)

Know the Answer?

Alma Carney · Answer 1

n + q = 35

n = 35-q

0.05n + 0.25q = 8.15

0.05 (35-q) + 0.25q = 8.15

1.75 - 0.05q + 0.25q = 8.15

1.75 + 0.20q = 8.15

0.20q = 6.40

q = 6.40 / 0.20 = 32

32 quarters and 3 nickels