
Call 1800-123-2003
"Smartindia is the best online tool for school students." Ms Deepa Chandran, Principal Anchal
"Smartindia is one of the best supplementary education tool for school students." Ms Pooja, Principal
Abdul while driving to school,computes the average speed for his trip to be 20km/h.On bis return trip along the same away,there is a less traffic and the average speed is 30km/h.what is the average speed for the Abdul's trip ? |
Let x be the distance t1= x / 20 Let t2 be the time taken for the return trip t2 = x / 30 Total time taken = x/20 + x/30 = 50x / 600 = 5/60 x Average speed = d/t = 2x / 5/60 x = 120 /5 = 24 km/h |