SOLUTION: In the morning maria drove to a business appointment at 30 mph. Her average speed on the return trip in the afternoon was 20 mph. The return trip took a half hour longer because of

Question 905877: In the morning maria drove to a business appointment at 30 mph. Her average speed on the return trip in the afternoon was 20 mph. The return trip took a half hour longer because of heavy traffic. How far did he travel to the appointment?
Answer by richwmiller(17219) (Show Source): You can put this solution on YOUR website!
Maria = How far did he travel
30*t=20*(t+30/60)
30*t=20*t+600/60
30*t=20*t+600/60
-600/60=20+30*t
-600/60=-10*t
1=t
t=1 hours
distance =30*1=30 miles
distance =20*1.5=30 miles

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