Question

One bus leaves a stop every 12 minutes. A second bus leaves the same stop every 18 minutes. If they both leave at 3:20 P.M., at what time will the next leave together? (It is multiple choice and the choices are... A.3:32pm B.3:38pm C.3:50pm D.3:56pm) NEED HELP PLEASE!!!!

Answer 1

3:20 + 12= 3:32
3:20 + 18=3:38
3:32 + 12=3:44
3:38 + 18=3:56
3:44 + 12=3:56

Answer=3:56