SOLUTION: A car leaves a town traveling at 72 km/h. An hour later, a second car leaves the same town, on the same road traveling at 90 kn/h. In how many hours will the second car overtake th
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-> SOLUTION: A car leaves a town traveling at 72 km/h. An hour later, a second car leaves the same town, on the same road traveling at 90 kn/h. In how many hours will the second car overtake th
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Question 166792: A car leaves a town traveling at 72 km/h. An hour later, a second car leaves the same town, on the same road traveling at 90 kn/h. In how many hours will the second car overtake the first? Answer by josmiceli(19441) (Show Source):
You can put this solution on YOUR website! They both will have gone the same distance
when they meet.
Let = the distance they both travel
Let = the time elapsed during the 1st car's trip
For 1st car:
For the 2nd car
Since both 's are equal, hrs
The 2nd car's elapsed time is hrs
The 2nd car overtakes the 1st car in 4 hours
Check the answer:
For the 1st car km
For the 2nd car km
OK
