SOLUTION: Two cars leave town going in opposite directions. One car is traveling 40 miles per hour (mph), and the other car is traveling 20 mph. How long will it take before the cars are 300

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Question 330955: Two cars leave town going in opposite directions. One car is traveling 40 miles per hour (mph), and the other car is traveling 20 mph. How long will it take before the cars are 300 miles apart?
Found 2 solutions by Fombitz, mathmandotcom:
Answer by Fombitz(32388) About Me  (Show Source):
You can put this solution on YOUR website!
Rate*Time=Distance
.
.
.
Car 1: 40%2At=D1
Car 2: 20%2At=D2
Find t when D1%2BD2=300,
40%2At%2B20%2At=300
60t=300
t=5 hrs

Answer by mathmandotcom(31) About Me  (Show Source):
You can put this solution on YOUR website!
D=rt where D=distance, r=raste and t=time
If one car is traveling 40mph and the other car is traveling 20mph then in 1 hour hey will be 60 miles apart
so 300=60t divide both sides byy 60
300/60=t
t=5 hours