The money from two vending machines is being collected. One machine contains 30 dollar bills and a bunch of dimes. The other machine contains 38 dollar bills and a bunch of nickels. The number of coins in both machine is equal , and the amount of money that the machines collected is also equal.

Question

How much coins are in each machine?

Answer 1

1 nickel = $0.05

1 dime = $0.10

The question means:

$38 + $0.05 ∙ c = $30 + $ 0.1 ∙ c

where c = number of coins

38 + 0.05 c = 30 + 0.1 c

Try to solve this equation.

The solution is:

c = 160

Answer 2

Thank you!