SOLUTION: A car travels for 100 miles at a uniform speed. If the speed is increased by 5 miles per hour, the trip would take one hour less time. what is the car's original speed?

Question 880137: A car travels for 100 miles at a uniform speed. If the speed is increased by 5 miles per hour, the trip would take one hour less time. what is the car's original speed?
Answer by josmiceli(19441) (Show Source): You can put this solution on YOUR website!
(1)
(2)
--------------------------
(1)
By substitution:
(2)
(2)
(2)
(2)
(2)
(2)
(2)
(2)
(2)
(2)
(2)
The car's original speed was 20 mi/hr
check:
(1)
(1)
(1)
and
(2)
(2)
(2)
(2)
(2)
OK

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