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If A: B = 4: 7, Find the Following: - ICSE Class 10 - Mathematics

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Question

If a : b = 4 : 7, find the following: 

`(6"a" - "b")/("a" + 3"b")`

Solution

a : b = 4 : 7 ⇒ `"a"/"b" = 4/7`

`(6"a" - "b")/("a" + 3"b") = (6 "a"/"b" - 1)/("a"/"b" + 3)`

= `(6 xx 4/7 - 1)/(4/7 + 3)`

= `(24/7 - 1)/( 4/7 + 3)`

= `17/25`

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APPEARS IN

 Frank Solution for Frank Class 10 Mathematics Part 2 (2016 to Current)
Chapter 9: Ratio and Proportion
Exercise 9.1 | Q: 2.2

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Solution If A: B = 4: 7, Find the Following: Concept: Ratio and Proportion Example.
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