Mr Kumar drives to work at an average speed of 48km hr The time taken to cover the first 60 of the d...........

Quantitative Aptitiude (CLAT) Time & distance

Mr. Kumar drives to work at an average speed of 48km/hr. The time taken to cover the first 60% of the distance is 10 minutes more than the time taken to cover the remaining distance. How far is his office?

30km

40km

45km

48km

Explanation:

Let the distance be N. First 60% distance is covered in 10 more minutes more time than that of the rest 40% distance So, 0.6 x N distance is covered in 10 more minutes more than that of the rest 0.4 x N distance Which means 0.2 x N is covered in 10 minutes i.e., 1/6 hr Hence, Average speed = distance/time = 0.2 x N /(1/6) = 48 => x = 48/6 x 0.2 =40 km