The age difference between two persons is 20 years. If, 5 years ago, the older person was 5 times as old as the younger person, calculate their present ages in years.
A
20, 20
B
20, 10
C
25, 15
D
30, 10
Correct Option:
D
Explanation
Let the younger person's present age be x. Then the older person's age is x + 20. Five years ago, x + 15 = 5(x - 5). Solving gives x = 10, so their present ages are 30 years and 10 years.
