Question

Samuel decided to paint the house. He bought 2 cans of paint and one roller for $30. More help arrived, so he went back to the store and bought three more cans of paint and two more rollers for $50. How much did he have to pay for a can of paint?

Answer 1

$10
Solve the equations 2c+r=30 and 3c+2r=50 for c and r.

Answer 2

Thanks for the medal.