Problem Solution
François has twelve goats to milk before he can go to school. It takes five minutes to milk each goat, and fifteen minutes to walk to school. If school starts at 7:30 in the morning, what is the latest time he can start milking his goats?
Known information
There are 12 goats and it takes 5 minutes to milk each goat.
School starts at 7:30 in the morning and it takes 15 minutes to walk there.
What do we want to find out
Latest time to start milking goats
Solution steps
Time to milk 12 goats
12 goats x 5 minutes/goat = 60 minutes or one hour.
Total time to milk goats and walk to school
60 min + 15 min = 75 min or 1 hr and 15 min.
Latest time to start milking
7:30 - 1.15 = 6:15 in the morning.
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