Two cars 280 km apart begin driving toward each other on a long straight highway one car travels 60 km per hour in the other 80 km 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 120 km per hour and spends no time to turn around at each car how far has it flown with the cars collide the canary has flown how many kilometers