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 17, B was 24. Check: 17 = ½ × 24 ✓
Present ages: A = 27, B = 34
In 5 years: A = 32, B = 39
Age difference = |39 - 32| = 7
(Age difference stays constant over time = B - A = 7)
Present ages: A = 27, B = 34
In 5 years: A = 32, B = 39
Age difference = |39 - 32| = 7
(Age difference stays constant over time = B - A = 7)