Answer:
20 lengths
Step-by-step explanation:
The swimming pool is 50 meters long but he has to swim [tex]x[/tex] number of lengths to reach 1 kilometer.
50 meters = 0.05 kilometer
In order to get 1 kilometer we must multiply both sides of the equation by 20.
1000 meters = 1 kilometer
Which means Ian will have to go 20 lengths in order to swim 1 kilometer
