A person's present age is two-fifth of the age of his mother. After 8years, he will be one - half of the age of his mother. How old is the mother at present ? Choices
A) 25
B) 40
C) 32
D) 45
E) 28
Let the mother's present age be x years   Then the person's present age = 2x/5   (2x/5)+8 = 1/2(x+8)   2(2x+40) = 5 (x+8)   x = 40   Answer is 40
<result>B</result>
A person's present age is two-fifth of the age of his mother. After 8years, he will be one - half of the age of his mother. How old is the mother at present ?