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Question

Find the decimal form of 12+18+116.


A
0.5275
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B
0.6875
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C
0.5865
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D
none of the above
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Solution

The correct option is B 0.6875
Given operation is 12+18+116
By factorising the denominators,
12+18+116=12+123+124

To convert a fraction into decimal form, make the denominator in terms of multiples of 10.

(12×55)+(123×5353)+(124×5454)
=510+1251000+62510000
=0.5+0.125+0.0625
=0.6875

Mathematics

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