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AB is 400 kilometers away from each other. It takes 5 hours for car a to complete the whole journey and 4 hours for car B. if car a and car B leave AB at the same time, they will meet each other in a few hours Formula
400÷5=80 400÷4=100
400÷（80+100）=2.2…… hour
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1. Party A and Party B travel from a and B at the same time. It takes 6 hours for Party A to finish the whole journey. The speed of Party B is 2 / 3 of that of Party A. when they meet, Party A travels 18 kilometers more than Party B
2. A and B leave from a and B at the same time. After meeting at C, a arrives at B at 3.2 o'clock, B arrives at a at 5 o'clock. How many hours does it take for a and B to complete the whole journey
1 B needs 6x3 / 2 = 9 hours, meeting time 1 ^ (1 / 6 + 1 / 9) = 18 / 5 hours, distance between a and B 18 ^ (1 / 6x18 / 5-1 / 9x18 / 5) = 18 ^ (3 / 5-2 / 5) = 90 kilometers, B 90 ^ 9 = 10 kilometers per hour, 2 A's speed: V A, B's speed: v b, meeting time: T, distance: S.V a * t = v b * 5, that is v b / V a
Xiao Li and Xiao Han ride bicycles from a and B at the same time. It takes 6 hours for Xiao Li to complete the AB journey. The distance ratio of Xiao Li and Xiao Han is 3:2 when they meet. When they meet, Xiao Li travels 18 kilometers more than Xiao Han. How many kilometers per hour can Xiao Han travel?
Total distance: 18 △ 3-2 × (3 + 2), = 18 △ 1 × 5, = 90 (km); speed of Xiaohan: 90 △ 6 × 32, = 90 △ 9, = 10 (km); answer: Xiaohan travels 10 km per hour
A and B two cars respectively from AB two places at the same time relatively open 5 hours meet, meet the distance ratio is 3:2, how many hours to finish the whole journey?
The speed ratio is 3:2. It takes 7.5 hours for a and 12.5 hours for B
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