Question
Sunil covered 50% of his journey at 90 km/h and rest at
150 km/h. Determine the average speed of Sunil during the entire journey.Solution
We know that when distance covered is equal, then average speed is harmonic mean of both speeds. So, average speed = [(2 × 90 × 150)/(150 + 90)] = 112.5 km/h
More Time and distance Questions
4178, 2153, 928, 303, 78, 55
12, 13, 21, 44, 116.5, 340.5
Find the wrong number in the given number series.
15, 195, 575, 1155, 1935, 2915
Find the wrong number in given number series.
2158, 2183, 2283, 2508, 3083, 3533
33 34 37 42 48 58
Find the wrong number in the given number series.
17, 36, 73, 134, 220, 352
2, 6, 14, 30, 134, 614
Find the wrong number in the given number series.
334, 301, 271, 251, 239, 233
1, 4, 20, 126, 1026, 10170
12, 18, 40, 90, 270, 945
Relevant for Exams:
