Find out the age of elder son if he is 4 years elder to younger son 1– years ago there were 6 members in the family and the average age of them were 29 years. At present there are 8 members as two sons were born and the average age is increased by 1 year at present.
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your answer is here !
10 years ago total age of family
= 29 × 6 = 174 years
Total age of 5 members of family at present
= 174 + 10 × 6 = 234 years
Total age of family at present
= 8 × (29 + 1) = 8 × 30 = 240
Hence sum of age of two children
= 240 – 234 = 6 years
Hence age of elder son = 5 years
Age of Younger son = 1 year.
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