Question

He 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 present age of the husband is:

Answer 1

40

Step-by-step explanation:

let the age of husband be 'x' years

age of wife be 'y' years

age of child be 'z' years

average age of child,husband,wife before 3 years is 27

then present average age is30

i.e ((x+3)+(y+3)+(z+3))÷ 3=27+3=30

average age of mother and child before 5 years is 20

then present average age is 25

i.e ((x+5)+(y+5))÷2=20+5=25

age of mother and child

= 25 ×2

=50

age of husband=(30×3)-50

=90-50

=40