The average age of husband,wife and their child 3 years ago was 27 years and that of wife and the child 5 years ago was 20 years. the ppresent age of the husband is:
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present age of husband is 40
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Average age of husband,wife and child 3 years ago = 27
Sum total 3 years ago = 3*27 = 81
Sum total now(H+W+C) = 81+3+3+3 = 90
Average age of wife and child 5 years ago = 20
Average age now = 20+5 = 25
Sum total now(W+C) = 50
H+W+C = 90
W+C = 50
H = 40
Hence, present age of husband is 40 years.
Hope it helps
Sum total 3 years ago = 3*27 = 81
Sum total now(H+W+C) = 81+3+3+3 = 90
Average age of wife and child 5 years ago = 20
Average age now = 20+5 = 25
Sum total now(W+C) = 50
H+W+C = 90
W+C = 50
H = 40
Hence, present age of husband is 40 years.
Hope it helps
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