SOLUTION: Jason and Kim were at the park. If they both left at the same time, and Jason was driving at 30 mph, and kim was driving at 40 mph in the opposite direction, how long will it be b
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Question 333545: Jason and Kim were at the park. If they both left at the same time, and Jason was driving at 30 mph, and kim was driving at 40 mph in the opposite direction, how long will it be before they are 210 miles apart?
Answer by jrfrunner(365) (Show Source): You can put this solution on YOUR website!
You need to understand the relationship:
d=r*t (distance = rate*time)
----
Kim's distance after t hours:
Jason's distance after t hours:
--
They are travelling in opposite directions and you need to know the time when they are 210 miles apart, so add their distances
--
210/70 =t
===
t = 3 hours
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