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a. B is 500 km away from the two places, and a and B vehicles start from a and B respectively. If they start at the same time, they will meet each other in 5 hours; if B starts 5 hours earlier, they will meet each other in 3 hours, so as to find the speed of a and B vehicles
A and B speed and 500 divided by 5 = 100
Party B starts 5 hours early and Party A starts 3 hours earlier, which can be regarded as Party A and Party B go together for 3 hours and Party B go for another 5 hours
B speed (500-100 * 3) divided by 5 = 40
A 100-40 = 60
A and B both ride from AB to ab at the same time. A travels 15 kilometers per hour. After meeting B, a rides another 2 hours to B, and B rides another 45 kilometers to a to find the speed of B
A later rode 30 kilometers
B later rode 45 kilometers
The whole journey is 30 + 45 = 75 km
Speed ratio 45:30 = 3:2
B speed 15x2 / 3 = 10km / h
A and B two cars leave from AB two cities at the same time, a car travels 60 kilometers per hour, B car travels 59 kilometers per hour. When the two cars meet, a car travels 8 kilometers more,
Finding the distance between AB and ab
Eight hours
When the two cars meet, car a travels more than 8 kilometers to find the distance between city a and city B
A: the distance between city a and city B is 952 km
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