Question

Pat has 3 times as many dimes as nickels. In all she has $1.40. How many coins of each does she have?

Answer 1

Explanation:

d=3n

0.10d+0.05n=1.40

0.10(3n)+0.05=1.40

0.3n+0.05n=1.40

0.35n=1.40

n=4

d=3(4)

d=12

12(0.10)+.05(4)=1.40

1.40=1.40