Question

A wall is built of large blocks that are 1 foot by 1 foot by 1 foot,and each weigh 100 pounds. The volume of the wall is 240 cubic feet. What is the weight of the wall?

Answer 1

if 1 cubic feet=100 pounds then, 240 cubic feet=x pounds

1=100
240=x

cross multiply; x=24000 so x=24000