The ages of two persons differ by 20 years. If 5 years ago, the elder one be 5 times as old as the younger one, their present ages (in years) are respectively Choose the correct choice from the following answers.
A) 20,20
B) 20,10
C) 25,15
D) 30,10
E) None of these
Explanation:   Let their ages be x and (x + 20) years.   5 (x - 5) = (x + 20 - 5) or 4x = 40 or x = 10.   Their present ages are 30 years and 10 years   Option 30,10
<result>D</result>
The ages of two persons differ by 20 years. If 5 years ago, the elder one be 5 times as old as the younger one, their present ages (in years) are respectively