Question

1- 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 8 bundles of shingles for $256. Find the price per bundle of shingles and the price per roll of roofing paper.

Answer 1

32$ per bundle of shingles

20$ per roll of roofing paper

256÷8 = 32 (price of per bundle of shingles)

32×30 = 960 ( price of 30 bundles of shingles)

1040-960 = 80( price of 4 rolls of roofing paper)

80÷4 = 20 ( price of per roll of roofing paper).