Suppose you have $7.20 in dimes and quarters. How many of each coin do you have if you have twice as many quarters as dimes?
A) 12 dimes and 24 quarters
B) 10 dimes and 20 quarters
C) 19 dimes and 38 quarters
D) 14 dimes and 28 quarters
E) 16 dimes and 32 quarters

Question

Quizplus · Accepted Answer

Let x be the number of dimes. Then the number of quarters is 2x. The total value of the coins is 7.20, so we have:0.10x + 0.25(2x) = 7.200.10x + 0.50x = 7.200.60x = 7.20x = 12Therefore, the number of dimes is 12 and the number of quarters is 2(12) = 24.

Suppose You Have $7