Question

A box was 3/4 full.the box fell on the floor. 30 marbles fell out. this was 20% of the marbles that were in the box. how many marbles are in a full box

Answer 1

150

Explanation:

all i did was multiply 20% by 50 if it wasnt that i went up 50 if one of them gave me 30 i would know i had the right one.