Level 2
Kith was running in a race with Rey. When Kith was 320 m away from the finish line, Rey was 160 m away from the starting line. If Kith was 50 m ahead of Rey, how long was the race?

Level 2
Brad was running in a race with Kim. When Brad was 130 m away from the finish line, Kim was 170 m away from the starting line. If Brad was 50 m behind Kim, how long was the race?

Level 3
During a school anniversary celebration, pupils were required to line along one side of the corridor to welcome the Guest-Of-Honor from the foyer to the hall. They would stand at an equal distance apart. A pupil would stand at the beginning of the corridor and another pupil would stand at the end. The corridor was 50 m long. During the rehearsal, 26 pupils were asked to line one side of corridor, from the beginning to the end. On the actual day, 3 pupils were absent and 2 pupils were asked to serve drinks In the canteen instead. Those pupils who remained would have to spread themselves out to line the entire corridor, from the beginning to the end. Find the new distance between every 2 pupils.

Level 2
The distance between Jenny's home and the bookstore is 500 m. After walking a distance from her home to the bookstore, she stopped and walked 90 m back to a pet shop. If the pet shop is 150 m away from the bookstore, how far had she walked before she stopped and walked back?