SOLUTION: Marcy is taking two types of medicine. She takes one every 6 hours and one every 4 hours. If she takes her medicine at 9:00am how many time will she take both in the next 60 hours?

Question 999198: Marcy is taking two types of medicine. She takes one every 6 hours and one every 4 hours. If she takes her medicine at 9:00am how many time will she take both in the next 60 hours?
Answer by Boreal(15235) (Show Source): You can put this solution on YOUR website!
starting after 9 and ending at 9.
q6h (every six hours):
schedule is 3-9-3-9-...
q4h
schedule is 1-5-9-1-5-9
The only time she takes both is at 9 am and 9 pm
She will take both at 9 pm the first day (12 hours)
9 am at 24 hours, 9 pm at 36 hours, 9 am sat 48 hours, and 9 pm at 60 hours.
Five times.

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