Question

William has eight more nickels than dimes in his pocket for a total of $2.50. Which equation could be used to determine the number of x dimes in his pocket? A) 0.10(x + 8) + 0.05(x) = 2.50 B) 0.05(x + 8) + 0.10(x) = 2.50 C) 0.10(8x) + 0.05(x) = 2.50 D) 0.05(8x) + 0.10(x) = 2.50

Answer 1

B

Explanation:

0.05(x + 8) + 0.10(x) = 2.50

dimes = x

nickels = x + 8

Therefore,

0.05(x + 8) + 0.10(x) = 2.50

0.05x + 0.40 + 0.10x = 2.50

0.15x = 2.10

x = 14

William has 14 dimes and 22 nickels in his pocket.