Question

if the speed of acar is increased by 10km/hrs it takes 18minutes less than to cover a distance of 36km then find the speed of the car

Answer 1

Given : Total distance, D = 715 Km

To find : Speed of the car

We know,

Let the speed of the car be x km/hr.

 

When the car travels at uniform speed, time taken = 

If it travels at a speed of 10 km/hr more, time taken =

and the difference of time taken is 2 hrs, so the equation becomes



As the speed cannot be negative, so speed of the train, x = 55 km/hr. (Answer)