Question 790938: Salem and Vernonville are 112 miles apart. A car leaves salem traveling towards vernonville, and another car leaves vernonville at the sametime, traveling towards salem. The car leaving salem averages 10 miles per hour more than the other, and they meet after 1hour and 36 minutes. what are the average speeds of the cars?
Answer by mananth(16946)   (Show Source):
You can put this solution on YOUR website! Salem and Vernonville are 112 miles apart. A car leaves salem traveling towards vernonville, and another car leaves vernonville at the sametime, traveling towards salem. The car leaving salem averages 10 miles per hour more than the other, and they meet after 1hour and 36 minutes. what are the average speeds of the cars?
Car from vernonville speed =x
car from salem speed = x+10
Their combined speed = 2x+10
distance = 112
time = 1(36/60) hours = 1 (4/5) = (9/5)
d=rt
112 = (2x+10)*(8/5)
* 5
560 = 8(2x+10)
560=16x+80
560-80=16x
480=16x
/16
x=30
30 mph car from vernonville
30+10 =40 mph car from salem
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