Question

Q2: A car travels with the following speed and distance: 100 110 120 130 km/hr km/hr km/hr km/hr 120 km 130 km 140 km 150 km A) 115 km/hr B) 112 km/hr C) 1.17 km/hr D) 2.71 km/hr​

Answer 1

Answer:

You may be tempted to find the average speed by summing up the speed and dividing by 2. That is wrong because the average speed is the total distance divided by the total time. Let us find the distance first from Haryana to Bangalore. This can be done as follows:

Distance = (Speed)×(Time). Thus we can say that Distance = 60×30 = 1800 kilometers. Now we have to find the time taken to travel from Bangalore to Haryana. We can write:

Time = Distance / speed = 1800/40 = 45 hours. Thus we can find the average speed as:

Average Speed = (Total distance)/(Total Time) = (1800 + 1800)/(30 + 45) = 3600/75 = 48 km/hr. Hence the correct option here is C) 48 km/hr.

So to find the average speed never use theformula of the averages but try to find the total distance covered and the total time taken. Let us see a few more examples where the journey is completed in three stages.

Explanation:

plz folow me and give me a lot of thanks plz plz