SOLUTION: Susie drove 100 miles to visit a friend. If she had driven 8 miles per hour faster than she did, she would have arrived in 5/6 of the time it actually took. How many minutes did th

Question 890866: Susie drove 100 miles to visit a friend. If she had driven 8 miles per hour faster than she did, she would have arrived in 5/6 of the time it actually took. How many minutes did the trip take?
Answer by josmiceli(19441) (Show Source): You can put this solution on YOUR website!
Let = the speed in mi/hr that would
get her there non time
Let = time in hrs spent driving to
get her there on time
---------------------------
(1)
(2)
----------------------------
(2)
and
(1)
Substitute (1) into (2)
(2)
(2)
(2)
(2)
(2)
-------------------
(1)
(1)
(1) hrs
The trip actually took minutes
check:
(2)
(2)
(2)
OK

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