SOLUTION: two cars leave a parking lot and travel in opposite directions one travels at 10 miles per hour and the other travels at 7 miles per hour in how many hours will the two cars be 68

Question 511422: two cars leave a parking lot and travel in opposite directions one travels at 10 miles per hour and the other travels at 7 miles per hour in how many hours will the two cars be 68 miles apart.
Answer by oberobic(2304) (Show Source): You can put this solution on YOUR website!
The fundamental distance equation is d=rt.
The combined distance they travel is 68 miles.
They travel for the same amount of time, which we will call 't'.
One travels 10 miles/hr * t hours.
The other travels 7 miles/hr * t hours.
.
10t + 7t = 68
17t = 68
t = 4
.
Check to see how far they travel in 4 hours.
.
10 miles/hr * 4 hr = 40 miles
7 miles/pr * 4 hr = 28 miles
40 miles + 28 miles = 68 miles
Correct.
.
Answer: The two cars will be 68 miles apart in 4 hours.
.
Done.
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