Question

The Green Line circles the station every 9 minutes. The Red Line circles the station every 6 minutes. If they leave the station together, how long will it be until the next time that they leave the station together again? *

Answer 1

9-6=3......…… i could be wrong sorry

Answer 2

18 minutes

Explanation:

You need to find the common difference, which is 18. 9x2=18 6x3=18