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Question

The decimal form of 15+12+116 is ____
  1. 0.25625
  2. 0.5625
  3. 2.5625
  4. 0.7625


Solution

The correct option is D 0.7625
Given operation is  15+12+116
By factorising the denominators,
15+12+116=15+12+124

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

(15×22)+(12×55)+(124×5454)
=210+510+62510000
=0.2+0.5+0.0625
=0.7625

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