- 20
- 8
- 25
- 12.5

Answer: Option 4

Explanation:

The numbers in fraction cannot be added straightway unless the denominator is same. So find L.C.M to make the denominators same. L.C.M Of Denominators 7,3,5 is 105 Multiply Each of the Denominator in fraction to get 105 and multiply the same number with numerator also 11*15/7*15 + 22*35/3*35 + 18*21/%*21 165/105 + 770/105 + 378/105 so (165+770+378)/105 Now the denominators is same ,Can add it. 1313/105 = 12.5

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The heart that gives thanks is a happy one, for we cannot feel thankful and unhappy at the same time.The more we say thanks, the more we find to be thankful for.And the more we find to be thankful for, the happier we become.We don't give thanks because we're happy.We are happy because we give thanks.

-Douglas Wood
Secret of Saying Thanks