Question

if two buses left the station at 9am and, one took 20 minutes and the other 24 minutes what time would they both next leave the station at the same time

Answer 1

Answer:

9 = 32, 15 = 3 · 5

The least common multiple (LCM) of 9 and 15 is 45.

The next time they both leave at the same time is 45 minutes after 1:25, or 2:10.