The ratio of the present ages of L and S is 7 : 4. After 10 years from present L's age will be 31 years. What will be the ratio of respective ages of L and S after 15 years from present?
Show answer & explanation
Correct answer: A
Explanation
L's Current Age
10 years from now, L = 31
L = 31 − 10 = 21
S's Current Age (based on the ratio)
L : S = 7 : 4
L = 21
7x = 21
x = 3
S = 4x = 12
Ages after 15 years
L: 21 + 15 = 36
S: 12 + 15 = 27
Ratio
36 : 27
4 : 3
Correct Answer: A) 4 : 3