The ratio of present ages of two students is 8 : 7. The difference between their ages is 4 years. What is the age of the younger student?
Show answer & explanation
Correct answer: A
Explanation
Let ages = 8x and 7x
Difference: 8x − 7x = x = 4 ⇒ x = 4
Younger age = 7x = 7×4 = 28 years
Correct Answer: 28 years