SOLUTION: Each of two cars, whose average rates are in the ratio of 4:5, travels the distance of 160 miles. If the fast car travels 1/2 an hour less than the slow car, find the average rate
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Question 1066151: Each of two cars, whose average rates are in the ratio of 4:5, travels the distance of 160 miles. If the fast car travels 1/2 an hour less than the slow car, find the average rate of each car.
Answer by josmiceli(19441) (Show Source): You can put this solution on YOUR website!
Let their speeds = and
Let the time for the slow car =
= the time for the fast car
----------------------------------------
Slow car:
(1)
(2)
--------------------------------
(1)
(1)
--------------------------
(2)
(2)
(2)
(2)
(2)
-------------------
and
-------------------
The slow car's speed is 64 mi/hr
The fast car's speed is 80 mi/hr
--------------------------------
check:
(1)
(1)
(1)
and
(2)
(2)
(2)
(2)
(2)
OK
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