SOLUTION: Marilyn drove her car from Amirillo to Dallas at an average rate of 55 miles per hour and returned over icy roads averaging only 30 miles per hour. Find the time going and the time

Question 214154: Marilyn drove her car from Amirillo to Dallas at an average rate of 55 miles per hour and returned over icy roads averaging only 30 miles per hour. Find the time going and the time returning if the time returning was 4 hours more than the time going.
Answer by josmiceli(19441) (Show Source): You can put this solution on YOUR website!
write 1 equation for going
and another for returning

and

given:
mi/hr
mi/hr
hrs
(call it )
---------------------------------
Rewrite the equations

hr
hr
The time going was 4.8 hrs and
the time returning was 8.8 hrs
check answer:

mi
OK

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