Ricky is filling an 8 inch by 4 1/2 inch rectangular box with packing peanuts. the peanuts are cubes that come in two different sizes ,1 cubic inch and 1/8 inch .how many peanuts of each size are needed to fill the box?

Ok, so we can fill the part of the box that corresponds to the 8x4 inches with the boxes that are 1 cubic inch - that wound be 8x4, that is 32 such boxes.

then the rest would be 8x inches, that is 4 cubic inches.

In order to fill in 4 cubic inches with  inches boxes we calculate:

  So it's also 32 such small boxes!