Someone rides a bicycle from place a to place B. in the first 20 minutes, he completes 25 minutes of the whole journey. Then he speeds up and walks 60 meters more per minute than before. After another 15 minutes, he is still 1.8 kilometers away from place B. how many kilometers are there between place a and place B?

Someone rides a bicycle from place a to place B. in the first 20 minutes, he completes 25 minutes of the whole journey. Then he speeds up and walks 60 meters more per minute than before. After another 15 minutes, he is still 1.8 kilometers away from place B. how many kilometers are there between place a and place B?

The distance between Party A and Party B and Party A and Party A and Party B are x km apart. According to the meaning of the article, the equation can be obtained: (1-25) x - (25X - (25X 25x \\\partya and Party B is the equation: (1-25) x - (25X x \\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\& nbsp; & nbsp; & nbsp; &Nbsp; 310x = 2.7, & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; X = 9, a: the distance between Party A and Party B is 9km

Xiao Ming from a to B, first half of the journey by bike, 12 kilometers per hour, the rest of the walk, 4 kilometers per hour. Xiao Ming's average speed is 12 kilometers per hour______ Kilometers

Let the whole journey be 24 km (other numbers can also be set), 12 △ 12 + 12 △ 4 = 1 + 3 = 4 (hours), 24 △ 4 = 6 (kilometers) a: Xiaoming's average speed is 6 km per hour when he completes the whole journey. So the answer is: 6