A person's present age is two-fifth of the age of his mother. After 10 years, he will be one - half of the age of his mother. How old is the mother at present ?	Pick:
A) A)25  B) B)40  C) C)32  D) D)50  E) E)28
Let the mother's present age be x years   Then the person's present age = 2x/5   (2x/5)+10 = 1/2(x+10)   2(2x+50) = 5 (x+10)   x = 50   Answer is 50
<result>D</result>
A person's present age is two-fifth of the age of his mother. After 10 years, he will be one - half of the age of his mother. How old is the mother at present ?