<PRE><B>Question 1014408</B>
1. Two cars leave town at the same time in opposite directions. One travels 35 km/h and the other 40 km/h. In how many hours will they be 200 km apart?
The cars are separating at a rate of 35+40 = 75 km/h
Equation:
time = distance/rate
Ans: time = 200km/75km/h = (200/75)hr = 2 2/3 hrs = 2hr 40min
----------------------------------------
2. Two cars leave town at the same time in the same direction. One travels 35 mi/h and the other 40 mi/h. In how many hours will they be 15 miles apart?
------
slower car DATA: distance = 35t, where t is the number of hours
faster car DATA: distance = 40t,
------
Equation:
faster dist - slower dist = 15
40t - 35t = 15mi
5t = 15 mi
time = 3 hrs
----------------
Cheers,
Stan H.
--------------------</PRE>