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### Primary 6 Problem Sums/Word Problems - Try FREE

- Ratio: Think units and you're on your way! > Ratio Exercise 10 > 1
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**Question
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Kathy, Alice and Mary have some marbles.

The ratio of the total number of marbles Alice and Mary have to the number of marbles Kathy has is 15:28.

Also, the ratio of the number of marbles Alice has to the total number of marbles that Kathy and Mary have is 9:34.

If Mary has 36 marbles, how many marbles do they have altogether?

The correct answer is :

**258**