A roofing contractor buys 30 bundles of shingles and 4 rolls of roofing paper for $1040.

In a second purchase (at the same prices), the

contractor buys 12 bundles of shingles and 16 rolls of

roofing paper for $2000.

Create and solve a system of equations in order to

determine how much each bundle of shingles (x) and

roll of roofing paper (y) would cost