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If A: B = 3: 5, Find: (10a + 3b): (5a + 2b) - ICSE Class 10 - Mathematics

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Question

If a: b = 3: 5, find: (10a + 3b): (5a + 2b)

Solution

Given `a/b = 3/5`

`(10a + 3b)/(5a + 2b)`

`= (10(a/b) + 3)/(5(a/b) + 2)`

`= (10(3/5) + 3)/(5(3/5) + 2)`

`= (6 + 3)/(3 + 2)`

= 9/5

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 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.7D | Q: 1

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Solution If A: B = 3: 5, Find: (10a + 3b): (5a + 2b) Concept: Ratios.
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