Question 1
10 years ago, A was half as old as B. In 5 years, what will be the age difference between B and A?
10 years ago: A was 12, B was 14. Check: 12 = ½ × 14 ✓
Present ages: A = 22, B = 24
In 5 years: A = 27, B = 29
Age difference = |29 - 27| = 2
(Age difference stays constant over time = B - A = 2)
Present ages: A = 22, B = 24
In 5 years: A = 27, B = 29
Age difference = |29 - 27| = 2
(Age difference stays constant over time = B - A = 2)