SOLUTION: Mr. Warren drove from Twonsville to Villaville and back again at the speeds shown. Hit total driving time was 12 hours. How far apart are the two towns? -----> 70mph <----- 50

Question 817057: Mr. Warren drove from Twonsville to Villaville and back again at the speeds shown. Hit total driving time was 12 hours. How far apart are the two towns?
-----> 70mph
<----- 50mph
Answer by Alan3354(69443) (Show Source): You can put this solution on YOUR website!
Mr. Warren drove from Twonsville to Villaville and back again at the speeds shown. Hit total driving time was 12 hours. How far apart are the two towns?
-----> 70mph
<----- 50mph
--------------
Avg speed for the round trip = 2*70*50/(70+50)
= 700/12 = 175/3 mi/hr
----
TR distance = r*t = (175/3)*12
= 700 miles
--> 350 miles each way

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