Nihar's present age is two-fifth of...
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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

11th - 12th Class
Maths
Solution
127
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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} ]
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