Question 755704

Two cars, 120 miles apart, begin driving toward each other on a long straight highway.  One car travels 20 miles per hour and the other 40 miles 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 always flies 150 miles per hour and turns around instantly at each car, how far has it flown when the cars collide?


The canary flew {{{highlight_green(300)}}} miles


You can do the check!!


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