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A and B leave AB at the same time. They meet in 5 hours. When they meet, car a runs 50 kilometers less than car B The speed of a is 5 / 7 of that of B. how many meters is ab
Let B be x kilometers per hour
Then a is 5x / 7
So 5x-5 × 5x / 7 = 50
(5-25/7)x=50
x=50÷10/7=35
5x/7=25
5×(35+25)=300
A: the AB distance is 300 kilometers
A and B start from ab at the same time, and meet each other for 2.5 hours. If a goes 50 kilometers ahead, then the two vehicles meet after 2 hours, and B is known
The speed of the car is 1.5 times that of car A. how many kilometers do two cars travel per hour?
Don't use XY or something. Solve the equation
Suppose car a travels x kilometers per hour, then the speed of car B is 1.5 x kilometers per hour;
2.5(x+1.5x)=50+2(x+1.5x)
If x = 40, then 1.5x = 60
So car a can travel 40 kilometers per hour, car B can travel 60 kilometers per hour
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