SOLUTION: Jim traveled 240 miles east averaging a speed of 60 miles per hour but at one time he slowed down to 20 miles per hours. If the total time traveled was 8 hours, how many miles were
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Question 724724: Jim traveled 240 miles east averaging a speed of 60 miles per hour but at one time he slowed down to 20 miles per hours. If the total time traveled was 8 hours, how many miles were traveled at reduced speeds? Answer by josmiceli(19441) (Show Source):
You can put this solution on YOUR website! Let = time in hrs spent going 60 mi/hr
Let = time in hrs spent going 20 mi/hr
Let = distance traveled at 60 mi/hr
----------------
(1)
(2)
-------------------------
(2)
Multiply both sides by
(2)
Substitute (1) into (2)
(2)
(2)
(2)
and
120 mi was traveled at an average of 20 mi/hr
check:
(2)
(2)
(2)
(2)
OK
