Question 1044361: Two cars, 465 kilometers apart, begin driving toward each other on a long, straight highway. One car travels 75 kilometers per hour and the other 8080 kilometers per hour. At the same time, a canary, starting on one car, flies back and forth between the two cars as they approach each other. If the canary flies 100 kilometers per hour and spends no time to turn around at each car, how far has it flown when the cars collide?
Answer by ankor@dixie-net.com(22740)   (Show Source):
You can put this solution on YOUR website! Two cars, 465 kilometers apart, begin driving toward each other on a long, straight highway.
One car travels 75 kilometers per hour and the other 80 kilometers per hour.
At the same time, a canary, starting on one car, flies back and forth between the two cars as they approach each other.
If the canary flies 100 kilometers per hour and spends no time to turn around at each car, how far has it flown when the cars collide?
:
Find how long (t) it takes the cars to collide
75t + 80t = 465
155t = 465
t = 465/155
t = 3 hrs
:
The bird flies for 3 hrs at 100 km/hr. dist = speed * time
d = 100 * 3
d = 300 km it has flown when crash occurs
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