SOLUTION: Two cars start at the same spot. The red car travels east at 40mph and the blue car travels west at 50 mph. How long will it be until the two cars are 225 miles apart?

Question 353613: Two cars start at the same spot. The red car travels east at 40mph and the blue car travels west at 50 mph. How long will it be until the two cars are 225 miles apart?
Answer by ewatrrr(24785) (Show Source): You can put this solution on YOUR website!
Hi,
*Note; cars traveling in opposite direction for the same amont of time
d = r* t
.
40mph*t + 50mph*t = 225mi
t(90mph) = 225m
t = 225m/90mph
t = 2.5 hr
they will be 225m apart in 2hr and 30m
.
check your answer
.
40mph*2.5 + 50mph*2.5
100 + 125 = 225 mi
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