Question

A box of cereal measures 3 by 8 by 10 inches. The manufacturer plans to market a smaller box that measures 2 by 7 by 8 inches. By how much will the volume be reduced?

Answer 1

if we see volume then it was 3*8*10=240 (unit)^3

now it became 2*7*8=112 (unit)^3

so it reduces 128 unit^3