Question

Let Ninar's age be N and mother's be M
[
N=frac{2}{5} times M
]
Atter & years
[
begin{array}{c}
(N+8)=frac{1}{2} times(M+8)
2 N+16=M+8
2 N+8=frac{5}{2} N
frac{N}{2}=8
N=16
end{array}
]

# Nihar's present age is two-fifth of the age of his mother. After 8 yr. he will be one-half of the age of his mother. Find his present age. (1) 12 yr (2) 10 yr (3) 15 yr (4) None of these

Solution