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Find the compounded ratio of 1 : 3, 2 : 5 and 3 : 2. 
1. 1 : 3
2. 1 : 5
3. 2 : 5
4. 3 : 4

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Best answer
Correct Answer - Option 2 : 1 : 5

Given:

3 ratios are 1 : 3, 2 : 5 and 3 : 2

Formula used:

If a : b  and c : d are two simple ratios, then their compounded ratio is ac : bd.

Calculation:

The compounded ratio of 1 : 3, 2 : 5 and 3 : 2 is

= 1/3 × 2/5 × 3/2 = 1/5 = 1 : 5

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