- 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 Fifth Mountain