Don J.
asked • 09/17/19elaine rides bike to friends at 10 mph.
she returns at 25 mph
it too 1.5 hrs longer to get there than back
how long did she ride to get there?
Raymond B. answered • 08/02/25
Math, microeconomics or criminal justice
10 mph biking one way
25 mph driving back same way
1.5 hours longer going than coming back
how long to get there biking??
use the d=rt formula, twice. distance = speed rate times time
d = 10(t) = 25(t-1.5)
2t = 5t -7.5
3t = 7.5
t = 2.5 = 2 1/2 hours biking
2 1/2 - 1 1/2 = 1 hour driving
150 minutes going, 60 minutes coming back
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