Question

Dray collects marbles of different colour. 7/8 of his marbles are red. 2/9 of the remaining marbles are blue. How many marbles does he have in total, if the number of green marbles that he has is 14?

Answer 1

I guess we have to assume there are only three colours otherwise the answer is impossible to find.
1/8 are not red.
7/9 of non-red are green
So 1/8 x 7/9 of total are green = 14
7/72 total = 14
total = 14 x 72/7 = 144 marbles