Question 303501
at 2:00 p.m. a runner heads north on a highway jogging at 10mph. at 2:30 p.m. a driver heads north on the same highway to pick up the runner. if the car travels at 55 mph, how long will it take the driver to catch the runner?
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In 30 min, the runner goes 5 miles.
The driver gains on the runner at 45 mph (55-10)
5/45 = 1/9 hour = 20/3 minutes
= 6 min 40 seconds