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A and B set out from place a to place B at the same time. After a arrived at place B, they immediately returned and met B 32 kilometers away from place B. It is known that a travels 20 kilometers per hour and B 12 kilometers per hour? (solved by equation)
If the distance between AB and ab is x km, then the driving distance of a and B is x + 32, x-32 km, so & nbsp; X + 3220 = x − 3212 & nbsp; 20 (x-32) 20 (x-32) = 12 (x + 32) & nbsp; & nbsp; if the distance between AB and ab is x km, then the driving distance of a and B is x + 32, x-32, x-32 km, so & nbsp; X + 3220 = x + 32, x-32-32 km, x-32-32 km, so & nbsp; so & nbsp; nbsp; X + 32220 (x + 32220 = x-3212-3212 & nbsp; 2 (x-32) (20 (x-32) (x-32 (x-32) (x-32) = 12 (x + 32) (12 (x + 32) (12 (x + 32) (12 (x + 32) (12 (x + 32) (12 (x + 32) (x + 32) (12) (12 (x + 32) is x + 32) & nbsp; (x nbsp; &The distance a travels when meeting is 128 + 32 = 160 (km) and the distance b travels when meeting is 128-32 = 96 (km). A: from departure to meeting, a travels 160 km and B 96 km
Party A and Party B go from place a to place B at the same time. After arriving at place B, Party A immediately returns along the original road. On the way back, Party B meets Party B 14 kilometers away from place B,
Party A and Party B go from place a to place B at the same time. After arriving at place B, Party A immediately returns along the original road. On the way back, Party B meets Party B 14 kilometers away from place B. It is known that Party A is 20 kilometers per hour and Party B is 12 kilometers per hour. How many kilometers does Party A and Party B walk from the departure to the meeting
When they met, a traveled 14x2 = 28km more than B
So the time of meeting is 28 (20-12) = 3.5 hours
A: 30x3.5 = 70km
B: 12x3.5 = 42km
A and B both go from a to B at the same time. After arriving at B, they immediately return and meet a at a distance of 30 km from B. It is known that a's speed is 4 / 5 of that of A
How many kilometers is the distance between the two places? Remember! Don't use the equation!
When we meet, the distance of a is 4 / 5 of that of B
The distance is 1
When we met, we had a total of 2
So a line of 2 × 4 / 5 (4 / 5 + 1) = 8 / 9
So the distance is 30 (1-8 / 9) = 270 km
Party A and Party B go from place a to place B, and Party A returns to place B. they meet Party B 32 kilometers away from place B. It is known that Party A travels 20 kilometers every hour and Party B travels 12 kilometers every hour to find the distance between two places
Let x meet
20x-12x=2*32
x=8
20 * 8-32 = 128 km
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