**Nanyang SA2 Paper 2 Question 17**

The ratio of the number of twenty cent coins to the number of fifty cent coins in a box was 5:3. 60 twenty cent coins were taken out and exchanged for fifty cent coins of equal value. The money was then put back into the box. The ratio of the number of twenty cent coins to the number of fifty cent coins became 1:3 . How much money was there in the box?

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