Mara and alex are running laps around a track. Alex completes a lap every 45 secs and Mara every 36. If they starts at the same time, how long will it be until they cross the st…

Question

asked Feb 19, 2021 180k views

1 Answer

Kirkas · Answer 1 · 2021-02-23T11:20:45+0000

Answer:

180

Explanation:

Keep multiplying 45 until you get a number divisible by 36. This is called the least common multiple.