[ANSWERED] 1. A contractor hired three plumbers to work nine hours per day for five days and two laborers to…

1. A contractor hired three plumbers to work nine hours per
day for five days and two laborers to work seven hours for one day. What was the
total number of hours worked?
2. How many bundles of shingles are needed to cover a
two-part roof if one part is 400 square feet and the other part is 600 square
feet? It takes three bundles of shingles to cover 100 square feet.