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Solve: "3a"/4 + "A"/6 = 66 - Mathematics

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Question

Solve: `"3a"/4 + "a"/6 = 66`

Sum
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Solution

`"3a"/4 + "a"/6 = 66`

⇒ `("9a + 2a")/12 = 66`


⇒  `(9"a" + 2"a") = 66 xx 12`


⇒ 9a + 2a = 792


⇒ 11a = 792

⇒ a = `792/11 = 72`

⇒ a = 72

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Chapter 12: Simple Linear Equations (Including Word Problems) - Exercise 12 (C)

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Selina Concise Mathematics [English] Class 7 ICSE
Chapter 12 Simple Linear Equations (Including Word Problems)
Exercise 12 (C) | Q 10
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