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

we have 2 variables and 2 equations! we can solve easy as pi. we set them up as 2x+1y=30 and 3x+2y=50. calling x paint cost and y roller cost.

Answer 2

after solving we get x=10 and y=10.