SOLUTION: two automobiles start at the same time at the same place and travel in opposite directions. One travels at the rate of 45 kilometers per hour and the other at the rate of 40 kilome
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Question 905140: two automobiles start at the same time at the same place and travel in opposite directions. One travels at the rate of 45 kilometers per hour and the other at the rate of 40 kilometers per hour. In how many hours will they be 225 kilometers part? Answer by richwmiller(17219) (Show Source):
You can put this solution on YOUR website! 225=45*t+40*t
225=85*t
t=2.64705882 hours
The total time for car b to be 225 km from car a is 2.64705882 hours
d=R*t
d=40*2.64705882
d=105.882353+0
d=105.882353 miles from b at 40 mph
d=r*t
d=45*2.64705882
d=119.117647 miles from a at 45 mph
