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A and B ride from East and west at the same time. They meet in eight hours. If a travels less than one kilometer per hour, B travels more than three kilometers per hour, and they meet in seven hours The distance between East and West?
Analysis: eight hour meeting means that a and B ride together to complete the whole journey according to the original speed. If a travels less than 1 km per hour, B travels more than 3 km per hour, the 7-hour meeting shows that the later speed sum = (original speed sum - 1 + 3)
The distance between East and West is x km
X÷8=X÷7-1+3
8X=7X+112
X=112
A: the distance between East and West is 112 kilometers
A and B both rode bicycles from two places 45 kilometers away from each other at the same time. They met when they were two hours old. It is known that a travels 2.5 kilometers more per hour than B to find the speed of a and B
The speed and speed of Party A and Party B per hour are: 45 △ 2 = 22.5km
A per hour: (22.5 + 2.5) △ 2 = 12.5km
B per hour: 12.5-2.5 = 10 km
A and B rode bicycles from two places 36 kilometers apart and met each other in 1.6 hours. It is known that a traveled 2.5 kilometers more per hour than B,
Ask for the speed of A. give it to me before 8:10. There's a reward,
A:
The sum of the speed of two people = 36 △ 1.6 = 22.5 km / h
A is 2.5 km / h faster than B
The velocity of a is (22.5 + 2.5) △ 2 = 12.5 km / h
Party A and Party B ride at the same time from 65 kilometers away, two hours later they meet. It is known that Party A travels 2.5 kilometers more per hour than Party B, and how many kilometers per hour does Party B travel
Suppose B travels x kilometers per hour, the equation is
2x+2(x+2.5)=65
We get x = 15
So B travels 15 kilometers per hour
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