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

- Ratio & Percentage: Mix it up, mix it up! > Ratio & Percentage Exercise 5 > 3
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**Score :**

(Single Attempt)

**Question
**

There are 4 times as many ball bearings in box A as there are in box B.

If 10% of the ball bearings from box A and 20% of the ball bearings from box B are transferred to box C, box C will have 3420 ball bearings which is 25% more than what it had before.

How many more ball bearings than box B did box A have at first?

The correct answer is :

**3420**