Question

A contractor buys 325 sheets of plywood sheeting. The roof required 112 sheets, the first floor needed 37 sheets, and the second floor used 31. How many sheets were left?

a) 135 sheets
b) 155 sheets
c) 155 sheets
d) 155 sheets

Answer 1

After using some of the plywood for the roof and floors, the contractor subtracts the total used from their initial supply of 325 sheets. The calculation reveals there are 145 sheets of plywood remaining.

Step-by-step explanation:

To calculate how many sheets of plywood are left after the contractor uses some for different parts of a construction project, we perform simple subtraction. The contractor starts with 325 sheets. They use 112 sheets for the roof, 37 for the first floor, and 31 for the second floor. To find the remaining sheets, subtract the total used from the initial amount:

Remaining sheets = 325 - (112 + 37 + 31)

First, add the number of sheets used: 112 + 37 + 31 = 180

Then, subtract this total from the initial amount: 325 - 180 = 145

Therefore, the contractor has 145 sheets left after completing the work on the roof and floors.