Question

If 3/5vof a cup of water fills 3/4 of a plastic container, how much water, in cups, is needed to fill one whole container?

Answer 1

3/5 3/4

3/5*4/3=12/15=4/5

4/5 cups of water

because 4/3 is the reciprocal of 3/4 and so 3/4*4/3=1