Question

David watches Maria and Alma race electric trains around a track. Maria's train goes around the track in 10 seconds. Alma's train goes around the track in 12 seconds.

How long will it take for both trains to cross the finish line together the first time?

Answer 1

the anwser is 60 seconds

Answer 2

60 seconds

Explanation:

The LCM of 10 and 12 is

10 = 2 × 5

12 = 2² × 3

LCM = 2² × 3 × 5 = 60

Answer: 60 seconds