Two cars are traveling straight toward each other. each car is going 10 km/hr. a mosquito is riding on the front bumper of one the cars. when the cars are 20 km apart, the mosquito leaves the bumper and flies toward the other bumper at 30 km/hr. when it gets to the other bumper, it abruptly turns around and flies back to the other bumper, and keeps repeating the back-and-forth trip from bumper to bumper, until the cars collide, and squash! how far, in kilometers, did the mosquito travel in its total back-and-forth trips?