[ANSWERED] 1. If a 3 1/2-inch-thick beam is covered with 3/4- inch plywood on one side and 5/8-inch drywall on.

1. If a 3 1/2-inch-thick beam is covered with 3/4- inch
plywood on one side and 5/8-inch drywall on the other side, what is the total
thickness of the assembly?
2. If 3/4 gallon of paint is taken from a 5-gallon pail in
the morning and 1 3/8 gallons are taken in the afternoon, how much paint
remains in the pail?