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Simplify: 212+15212÷15 - Mathematics

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Question

Simplify: `(2 1/2 + 1/5)/(2 1/2 ÷ 1/5)`

Sum

Solution

Given, `(2 1/2 + 1/5)/(2 1/2 ÷ 1/5)`

= `(((2 xx 2) + 1)/2 + 1/5)/(((2 xx 2) + 1)/2 ÷ 1/5)`

= `(5/2 + 1/5)/(5/2 ÷ 1/5)`

= `((25 + 2)/10)/(5/2 xx 5)` ......`[∵ "Reciprocal of"  1/5 = 5]`

= `(27/10)/(25/2)`

= `27/10 xx 2/25`  ......`[∵ "Reciprocal of"  25/2 = 2/25]`

= `27/125`

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Chapter 2: Fractions and Decimals - Exercise [Page 47]

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NCERT Exemplar Mathematics [English] Class 7
Chapter 2 Fractions and Decimals
Exercise | Q 76. | Page 47
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