A mason's assistant's rate of pay is $0.75 per cubic foot of earth moved. He moves 220 cubic feet of earth to dig a trench. What is his pay for this job?
The assistant has to pay $0.75 per cubic foot. In this case, he has to move 220 cubic feet of earth. You multiply .75 by 220 and you should get 165. So he has to pay $165 in total.