Question

To paint his house, Samuel bought 2 cans of paint and one roller for $30. When friends came over to help, he went back to the store and bought three more cans of paint and two more rollers for $50. How much did he pay for a can of paint?

Answer 1

let x=cans of paint
let y=rollers

2x+y=30 for 2 cans of paint and 1 roller
3x+2y=50 for 3 cans of paint and 2 rollers

then just solve the top equation for y and substitute y in the second equation

you end up with x=10 and y=10

Answer 2

thanks

Answer 3

Medal!