Multiple Choice Questions

The average age of a couple is 25yrs Find the new average age of them 4yrs after if a child was born...........

Quantitative Aptitude(IBPS RRB CL) Average

The average age of a couple is 25yrs. Find the new average age of them 4yrs after if a child was born 2year after their marriage ?

Solution:
4yrs after the sum will be = 50+4+4+2 = 60
50 is (25*2) . The second 4 is child’s age
Average= 60/3 = 20

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