Question

6. The average age of a couple when they got married
was 30 years. Three years after their marriage,a child was born to them. The present average age of the couple and child is 34 yrs. Find the present age of the child.

Answer 1

Answer:

given,

average age of couple when married is 30 years,

let age of husband and wife age be X and y respectively.

then,(X+y)/2=30,

after 3 years,a child was born to them,

then the sum of ages of couple when their child was born will be 60+3+3=66.

given, present average age of couple and child is 34 years,

that means,(66+X+X+X)/3=34,

=>66+3x =102,

=>3x = 36,

=>X=12.

Therefore, present age of child is 12 years.

Hope it helps u...