The speed of the car is 80 km / h, and that of the bus is 45 km / h. (1) after X hours, how many kilometers did the car and bus travel together? (2) after X hours, how many kilometers did the car travel more than the bus?

The speed of the car is 80 km / h, and that of the bus is 45 km / h. (1) after X hours, how many kilometers did the car and bus travel together? (2) after X hours, how many kilometers did the car travel more than the bus?

In the same X hours, cars and buses travel 80x + 45x, and cars travel 80x - 45x more than buses