Question

a vending machine has twice as many quarters in it as dollar bills. if the quarters and dollar bills have a combined value os $96.00, how many quarters are in the vending machine?

Answer 1

There are 128 quarters in the vending machine

Answer 2

D = dollars. Q = 2D

0.25(2D) + D = 96
0.5D + D = 96
1.5D = 96
D= 64 dollars

therefore, there's 64 x 2, or 128 quarters in the machine