Question

7. The distance between two places is 120 km. A car travelling at a certain speed can cover the distance in 2 hours 30 minutes. By how many km/h should the speed of the car be
increased for it to take 30 minutes less to cover the distance?
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Answer 1

Step-by-step explanation:

Your 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

Answer 2

is it correct????????????