Question

three lightships flash simultaneously at 6 00 a.m. the first lightship flashes every 12 seconds, the second lightship flashes every 30 seconds and the third lightship flashes 66 seconds. at what time will the three lightships next flash together?

Answer 1

the answer should be the L.C.M of all three, 12,30,66

Answer 2

ya thats 660.
then wht?
Thank you

Answer 3

yep, then dats ur answer!

Answer 4

but wht time? :D

Answer 5

660?

Answer 6

divide 660 by 60,u'll get 11 mins, so, the time should be 6:11 am

Answer 7

Thanks :)

Answer 8

convert 660 seconds into minutes....then add with 6:00 am

Answer 9

thanks :)

Answer 10

U R WELCUM!