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Find the Ratio Compounded of the Reciprocal Ratio of 15: 28, the Sub-duplicate Ratio of 36: 49 and the Triplicate Ratio of 5: 4. - ICSE Class 10 - Mathematics

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Question

Find the ratio compounded of the reciprocal ratio of 15: 28, the sub-duplicate ratio of 36: 49 and the triplicate ratio of 5: 4.

Solution

Reciprocal ratio of 15 : 28 = 28 : 15

Sub-duplicate ratio of 36 : 49 = `sqrt36 : sqrt49 = 6 : 7`

Triplicate ratio of `5 : 4 = 5^3 : 4^3 = 125 : 64`

Required compound ratio

`= (28 xx 6 xx 125)/(15 xx 7 xx 64) = 25/8 = 25 : 8`

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APPEARS IN

 Selina Solution for Selina ICSE Concise Mathematics for Class 10 (2018-2019) (2017 to Current)
Chapter 7: Ratio and Proportion (Including Properties and Uses)
Ex.7A | Q: 29

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Solution Find the Ratio Compounded of the Reciprocal Ratio of 15: 28, the Sub-duplicate Ratio of 36: 49 and the Triplicate Ratio of 5: 4. Concept: Ratios.
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