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SSC CGL Tier 1 :: GIR Test 10
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1 . Rahim and his uncle differ in their ages by 30 years. After 7 years, if the sum of their ages is 66, what will be the age of the uncle ?
[ A ]    39 [ B ]    41 right
[ C ]    51 [ D ]    49
Answer : Option B
Explanation :
Let uncle’s present age = x
Rahim's present age = y
y– x= 30                                                     ...(i)
After 7 year
(x + 7) + (y+ 7) = 66
x + y + 14 = 66
x + y = 52                                                    ...(ii)
combining (i) and (ii) we get
(x + y = 52) + (x – y = 30)
2x= 82
x= 41
Uncle's age is 41
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