SOLUTION: Malik drove his car for 45 miles at an average speed of r miles per hour. On the return trip, traffic has increased, and Malik's average speed in 3/4r. The round trip took a tota

Question 736465: Malik drove his car for 45 miles at an average speed of r miles per hour. On the return trip, traffic has increased, and Malik's average speed in 3/4r. The round trip took a total of 1 hour and 45 minutes. Find the average speed for each portion of the trip.
Answer by josmiceli(19441) (Show Source): You can put this solution on YOUR website!
The time for the 1st portion was
The time for the 2nd portion was
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Ave speed for 1st part: mi/hr
Ave speed for 2nd part: mi/hr

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