Question

a car moves a distance of 200 kilometers, it covers the first half of the distance at the speed of 60 kilometers per hour and the second half at a speed of v kilometers per hour is the average speed of the entire trip, is 40 kilometers per hour. find the value of v​

Answer 1

Answer:

Here v = 20 km/h

Explanation:

We know that average speed is total distance covered by total time taken. Here time is not given. But different speed is given. So we need to add both speed then divide it by number of observation (2).

i.e (60 + V) ÷ 2 = 20.

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Answer 2

Answer: here is your answer mate

Explanation: average speed = 200 +200/ 200/60 +200/40

   we cancel all the 200 terms = 2 / 1/60+1/40                      lcm=120

                                                    2 / 2+3/120

                                                   2*120/5 = 2*24 =48KM/HR