SOLUTION: Harry and Kerry started from the same point at the same time.They traveled in opposite directions on their bicycles.Harry traveled at the rate 9 km/h,and Kerry traveled at 11 km/h.

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Question 22260: Harry and Kerry started from the same point at the same time.They traveled in opposite directions on their bicycles.Harry traveled at the rate 9 km/h,and Kerry traveled at 11 km/h. afterr how many hours were they 60 km apart?
Answer by wuwei96815(245) (Show Source):
You can put this solution on YOUR website!
These types of problems are solved by using the distance =speed x time formula. In this problem we have two speeds to consider, but because Harry and Kerry are traveling in opposite directions, we can add the speeds together to get the total distance traveled.

d = s x t
60k = (9k/h+11k/h) x t
60k = 20k/h x t
60k divided by 20k/h = t
3 hours = t