In the first day of junior high school, a and B ride bicycles from AB to ab. a starts 15 minutes earlier than B. the speed of a and B is faster than B The ratio is 2: when meeting, a walked 6000 meters less than B. It is known that B walked for 1 hour and 30 minutes to find the speed of a and B and the distance between the two places

In the first day of junior high school, a and B ride bicycles from AB to ab. a starts 15 minutes earlier than B. the speed of a and B is faster than B The ratio is 2: when meeting, a walked 6000 meters less than B. It is known that B walked for 1 hour and 30 minutes to find the speed of a and B and the distance between the two places

A / b = 2 / 3 a = 2 / 3 B suppose: A's speed is (2 / 3) x, B's speed is x1.5x-1.5 * (2 / 3) x = 60001.5x-x = 60000.5x = 60000x = 12000, a's speed = (2 / 3) * 12000 = 8000 m / h, a's speed is 8 km / h, B's speed is 12 km / h (8 + 12) * 1.5 = 30 km