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

- Whole Numbers : Get this right and you will be amazing! > Whole Numbers Exercise 23 > 1
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**Question
1 of 3**

There are 4 bottles labelled P, Q, R and S.

These bottles contained a total of 1620 marbles.

The number of marbles in S was halved while the number of marbles in P and Q were increased by 110 and decreased by 30 respectively.

Eventually, the number of marbles in all 4 bottles became equal.

How many marbles were there in bottle S at first?

The correct answer is :

**680**