A car has to travel 360 kilometers from place a to place B. it starts to travel at the original planned speed of 45 kilometers per hour. On the way, it has to be repaired for 2 hours due to the car failure. Because it is necessary to arrive at place B on time, it has to travel 30 kilometers per hour after the car is repaired. Q: how far is the car from place a repaired? How to solve the equation

A car has to travel 360 kilometers from place a to place B. it starts to travel at the original planned speed of 45 kilometers per hour. On the way, it has to be repaired for 2 hours due to the car failure. Because it is necessary to arrive at place B on time, it has to travel 30 kilometers per hour after the car is repaired. Q: how far is the car from place a repaired? How to solve the equation

To arrive at place B on time is to arrive at the original planned time of 360 / 45 = 8 hours
After driving for X hours, the car broke down,
The equation is 45x + 75 (8-2-x) = 360
The solution is x = 3. So the car is repaired 45x3 = 135 km away from Jiadi

A car travels 45 kilometers per hour from a to B. after arriving at B, it returns to B at the speed of 60 kilometers per hour
Find the average speed of this car between a and B
I'll forget it, but I can't get rid of all the answers,

The time from a to B is 360 △ 45 = 8 hours
The time from B to a is 360 △ 60 = 6 hours
Average speed 360 * 2 ÷ (8 + 6) = 360 / 7 km / h
Except that it's not quite normal. If you haven't learned to accept this kind of answer, you can make an approximate value of 360 / 7 ≈ 51.4 km / h

A car from a to B travel 60 kilometers per hour, 4 hours to reach. The actual two hours star 100 kilometers, according to this calculation, to complete the whole journey a total of more than 10 kilometers

Hello, chocolate 124
Distance between Party A and Party B: 60 × 4 = 240 (km)
Actual speed: 100 △ 2 = 50 (km)
The total time required to complete the line: 240 △ 50 = 4.8 (hours)

A car from a to B travel 60 kilometers per hour, 4 hours can reach. In fact, the first two hours travel 100 kilometers, according to this calculation, complete the whole journey
How many hours does it take

60/50=X/4
x=4.8
2/100=X/240
x=4.8