Places and are apart on a highway. one car starts from and another from at the same time. If the car travels in the same direction at different speeds, they meet in . If they travel towards each other they meet in one hour. What is the difference of speeds in of the two cars?
Find the difference between the speed of two cars
Let us consider the speed of cars and are respectively.
The relative speed of car travelling in the same direction
The relative speed of car travelling in the opposite direction
Distance travelled
Since when the car travels in the same direction at different speeds, they meet in .
It is represented by the equation,
When they travel towards each other they meet in one hour.
It is represented by the equation,
After solving equation .
Hence, the difference of speeds is .