If 2 cubic feet of sand weigh 90 pounds how much do 5 cubic feet of sand weigh

Question

if 2 cubic feet of sand weigh 90 pounds how much do 5 cubic feet of sand weigh 

Answer 1

Use a proportion.

 

90/2 = x/5

450/2 = x

225 = x

 

5 ft³ weighs 225 lbs.