three bells ring at intervals of 30 minutes 40 minutes and 60 minutes in a college . if they all ring at 7:30 a.m. together , at what time will they ring together again ?
Answers
Answered by
8
LCM of 30,40&60=10×3×2×2=120mins=2hrs. I f they all ring at 7:30a.m together . another time they will ring at 7:30mins+2hrs=9:30hrs
Similar questions