The present age of Manoj is twice the sum of the ages of his two children. After 20 years, the age of Manoj will become equal to the sum of the ages of his two children. What is the present age of Manoj?
A.35 years
B.30 years
C.36 years
D.40 years✓ Correct
Explanation
Let Manoj's age = x and sum of children's ages = x/2. After 20 years: x+20 = (x/2+40), solving gives x/2 = 20, x = 40 years.
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