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There are two boxes, red and white in co...

There are two boxes, red and white in colour. The ratio of the number of chocolates in the white box to the number of biscuits in the red box is ` 3 : 2` and the ratio of the number of biscuits in the white box to the number of chocolates in the red box is ` 3 : 4 `. If the ratio of the total number of chocolates and biscuits in the white box to the total number of chocolates and biscuits in the red box is ` 15 : 16`. Find the ratio of the total number of chocolates to the total number of biscuits in the two boxes.

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