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Evaluate 0.60.3+0.160.4 - Mathematics

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Question

Evaluate `0.6/0.3 + 0.16/0.4`

Sum

Solution

Given, `0.6/0.3 + 0.16/0.4`

∵ 0.6 = `6/10` and 0.3 = `3/10`, 0.16 = `16/100` and 0.4 = `4/10`

∴ `0.6/0.3 + 0.16/0.4 = (6/10)/(3/10) + (16/100)/(4/10)`

= `(6/10 xx 10/3) + (16/100 xx 10/4)`  ......[∵ Division is reverse of the multiplication]

= `60/30 + 160/400`

= `6/3 + 16/40`

= `2/1 + 4/10` .....[∵ LCM of 1 and 10 = 10]

= `(20 + 4)/10`  

= `24/10`

= `12/5`

= 2.4

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Chapter 2: Fractions and Decimals - Exercise [Page 52]

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NCERT Exemplar Mathematics [English] Class 7
Chapter 2 Fractions and Decimals
Exercise | Q 109. | Page 52
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