Two airport shuttle buses arrive at a subway station At 7:30 AM. If one airport shuttle bus arrives every 8 min and the other airport shuttle bus arrives every 10 min, when is the next time that both airport shuttles will arrive at the subway station together?

Question

Two airport shuttle buses arrive at a subway station At 7:30 AM.  If one airport shuttle bus arrives every 8 min and the other airport shuttle bus arrives every 10 min, when is the next time that both airport shuttles will arrive at the subway station together?

anonymous · Answer

least common multiple of 8 and 10 is...

anonymous · Answer

40

anonymous · Answer

right!  and 40  minutes after 7:30 is...

anonymous · Answer

8:10?

anonymous · Answer

yup

anonymous · Answer

the 4th ten minute bus will arrive at 8:10 and the 5th eight minute buss will arrive then too. 
you can check

anonymous · Answer

YAAAY i'm not so blonde after all!!!! lol