A) 40 years
B) 32 years
C) 36 years
D) 48 years
Correct Answer: A
Solution :
Suppose the present age of his mother = x years Then, the present age of person \[\frac{2}{5}\,\,x\,\,years\] Now, after 8 years, \[\frac{2}{5}\,\,x+8=\frac{1}{2}\,\,(x+8)\] \[4x+80=5x+40\] \[x=40\,\,years\] Hence, the mother's present age = 40 years
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