Question 913924: One bus leaves a stop every 9 min. a 2nd bus leaves every 15 min. if they both left at 1:25pm what time will they next leave together? Answer by richwmiller(17219) (Show Source):
You can put this solution on YOUR website! 3*3
3*5
3*(3*5)=45 minutes
So add :45 to 1:25 =2:10 pm is the next time they will leave together