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A. The distance between B and B is 50km. A and B are from a to B. It is known that a rides a bicycle, B rides a motorcycle, and B starts 1 hour and 30 minutes later than a When you arrive an hour earlier, you know that the speed of a motorcycle is 2.5 times that of a bicycle. What are the respective speeds of a motorcycle and a bicycle? Ask for detailed explanation
Let the velocity of a be x, then the velocity of B be 2.5x
50/x =(50/2.5x) +1+1.5
x=12
It is known that the distance a travels per hour is three times that B travels per hour, less than six kilometers
1. Find the speed of B's bicycle
2. If B rides his bicycle for 20 minutes first, then a sets out and goes in opposite directions. A meets each other 5 hours after he sets out, and other conditions remain unchanged
It is known that the distance a travels per hour is three times that B travels per hour, less than six kilometers
Question:
1. Find the speed of B's bicycle
(250÷5+6）÷（1+3）
=（50+6）÷4
=56÷4
=14 km / h
2. If B rides his bicycle for 20 minutes first, then a sets out and goes in opposite directions. A meets each other 5 hours after he sets out, and other conditions remain unchanged
20 minutes = 1 / 3 hour
Let B cycle at a speed of X km / h
5(x+3x-6)+1/3x=250
5(4x-6)+1/3x=250
20x-30+1/3x=250
61/3x=280
x=840/61
A rides a motorcycle and B rides a bicycle from two places 250 kilometers apart at the same time. After five hours of meeting, it is known that the distance a travels per hour is three times that B travels per hour, less than 6 kilometers. The speed of B riding a bicycle is calculated
Suppose B's speed is x km / h, then a's speed is (3x-6) km / h. from the meaning of the question, we get 5x + 5 (3x-6) = 250, and the solution is: x = 14. A: B's speed is 14 km / h
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