Question

There are 130 people in a sport centre.

65 people use the gym.
51 people use the swimming pool.
44 people use the track.
15 people use the gym and the pool.
14 people use the pool and the track.
10 people use the gym and the track.
1 person uses all three facilities.
How many people use exactly one of these facilities?

Answer 1

39 gym, 21 pool, 19 track.

Explanation:

Subtract these from the 3 sports areas

15 people use the gym and the pool.

14 people use the pool and the track.

10 people use the gym and the track.

1 person uses all three facilities.

gym. 65-15-10-1=39

pool. 51-15-14-1=21

track. 44-14-10-1=19