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If it takes the same time for a truck to travel 50 km and a car to travel 75 km, it is known that the truck is 25 km slower than the car per hour, and the speed of the truck is x km Then x=
The speed of the car is x + 25
Then 50 / x = 75 / (x + 25)
50(x+25)=75x
Divide the two sides by 25
2x+50=3x
x=50
On the road, a truck is driving at a speed of 70 km / h, and a car is catching up 30 km away
Two hours later, I caught up with the truck on the way and exceeded the truck by 40 kilometers
Let the speed of the car be x km / h
2x=70*2+30+40
2x=70*2+30+40
x=105
On the highway, a truck was driving at the speed of 70 km / h from A. It was 0.5 hours ahead. When a car came up from a, it was on the way 2 hours later
Get on the truck and find the speed of the car
Let the speed of the car be x km / h
The truck ran for 2.5 hours and the car for 2 hours
therefore
2.5×70=2x
x=87.5
A: the speed of the car is 87.5 km / h
If you think the explanation is not clear enough, please ask
I wish: progress in learning!
On the road, a truck was driving at a speed of 42 km / h, and a car was catching up 32 km away. Two hours later
Catch up with the truck on the way and find the speed of the car
On the highway, a truck is driving at a speed of 42 km / h. a car is catching up 32 km away from him. Two hours later, he overtakes the truck on the way to find the speed of the car
42+32÷2
=42+16
=58 km / h
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