An empty sandbox has a length of 6 feet width of 4 feet and a depth of 2 feet. If the sandbox is filled with 8 bags of sand and each bag contains 4.5 cubic feet of sand, what fraction of the sandbox is still empty?

Answer 1

V = 6 * 4 * 2
V = 48 cubic feet

8 * 4.5 = 36 cubic feet

36/48 = 3/4 is filled

4/4 - 3/4 = ? empty