Five years ago average age of husband and wife was 23, years. Today average age of husband, wife and

English

Gujarati

Hindi

4.Average

medium

Five years ago the average age of husband and wife was $23\, years.$ Today the average age of husband, wife and child is $20 \,years.$ How old is child in $years$ ?

A

$3$

B

$4$

C

$12$

D

$2$

Solution

Sum of the present age of Husband and wife

$=23 \times 2+5 \times 2=56 \text { years }$

Sum of the present age of Husband, wife and child

$=20 \times 3=60$

Age of child $=60-56=4$ $years.$

Standard 13

Quantitative Aptitude

Share

Similar Questions

$3 \,years$ ago the average age of a family of $5 \,members$ was $17 \,years,$ with the birth of a new baby, the average age of six members remains the same even today. Find the age of the new baby in $year$.

medium

The average of six numbers is $20 .$ If one number is removed, the average becomes $15 .$ What is the number removed ?

easy

The average of nine numbers is $50.$ The average of the first five numbers is $54$ and that of the last three numbers is $52 .$ Then the sixth number is?

medium

The average of three consecutive odd numbers is $12$ more than one-third of the first of these numbers. What is the last of the three numbers ?

medium

The average expenditure of a man for the first five months is $Rs.\, 3600$ and for next seven months it is $Rs.\, 3900 .$ If he saves $Rs.\, 8700$ during the $year,$ his average income per $month$ is (in $Rs.$)

medium