Average of husband, wife and their child 3, years ago was 27, years and that of wife and child 5, ye

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The average 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 present age of the husband is (in $years$)

A

$50$

B

$40$

C

$35$

D

None of the options

Solution

Average present age of husband, wife and Child = 27 $+3=30$

Average present age of wife and Child $=20+5=25$

$\operatorname{Sum}( H , W , C )=30 \times 3=90$

Sum $( W , C )=25 \times 2=50$

Husband's present age $=40$

Standard 13

Quantitative Aptitude

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