A person's present age is two-fifth of the age of his mother. After
8 years, he will be one-half of the age of his mother. What is the present age of the mother? Choose the most appropriate option.
A) 40  B) 60  C) 70  D) 30  E) 35
Let present age = x   age of mother = 5x/2   after 8 yrs the person will be one-half of the age of his mother   (x+8) = 1/2(5x/2 + 8)   x =16   present age of mother=   5x/2 = 5*16/2= 
<gadget id="calculator">5*16/2</gadget>
<output>40</output>
40   40NSWER 40
<result>A</result>
A person's present age is two-fifth of the age of his mother. After
8 years, he will be one-half of the age of his mother. What is the present age of the mother?