The speed of car a is 75% of that of car B. the two cars are going towards each other at the same time from AB and meet at 5km away from the midpoint. How many kilometers is the distance between AB and ab? What is the speed of each car?

The speed of car a is 75% of that of car B. the two cars are going towards each other at the same time from AB and meet at 5km away from the midpoint. How many kilometers is the distance between AB and ab? What is the speed of each car?

Distance 5 ÷ [1 / 2-75% / (1 + 75%)]
=5÷【1/2-3/7】
=5÷1/14
=70km
No time, no speed

Car a and car B leave from a and B respectively. Car a travels 1.5 times as much as car B every hour. Three hours later, the two cars meet. At this time, car a exceeds 45 kilometers from the midpoint. How many kilometers does car a and car B travel per hour?

B's speed: (45 × 2) △ 3 △ 1.5-1) = 90 △ 3 △ 0.5 = 60 (km); a's speed: 60 × 1.5 = 90 (km) a: a travels 90 km per hour, B travels 60 km per hour

It is known that a goes from a to B and B goes from B to a. the ratio of the walking speed of a and B is 6:5. As shown in the figure, M is the midpoint of ab. there is a point C 26 km away from m and a point D 4 km away from M. anyone who passes through C has to slow down 14 and speed up 14 when passing through D. now a and B start at the same time and arrive at the same time. How many kilometers is the distance between a and B?

Because m is the midpoint of AB, let de = 22km on MB, then EB = AC, let EB = x, from the meaning of the question, (725 + 215) x + 215 × 22 = (26 + 4) × 2875, & 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; 3175x = 5