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 14, B was 18. Check: 14 = ½ × 18 ✓
Present ages: A = 24, B = 28
In 5 years: A = 29, B = 33
Age difference = |33 - 29| = 4
(Age difference stays constant over time = B - A = 4)
Present ages: A = 24, B = 28
In 5 years: A = 29, B = 33
Age difference = |33 - 29| = 4
(Age difference stays constant over time = B - A = 4)