Question

the distance between two places 130 km a car travelling at a speed can cover the distance in 1 hour 15 minutes by how many kilometres should the speed of a copy increase for it to take 10 minutes less than to cover the distance​

Answer 1

Answer:

Here, distance =120km and time=2hr30min

So, speed = distance/ time

Average speed = 120/ 2.5 because 2hr30min = 2.5 hrs

120/2.5= 48km/h

Now, 2hr30min - 30min = 2hrs

So, 120/2 = 60km/h »»» (60–48)km/h = 12km/h