A train runs 25 miles at a speed of 30 mph,another 50 miles at a speed of 40 mph then due to repairs of the track travels for 6 minutes at a speed of 10 mph and finally covers the remaining of 24 miles at a speed of 24 mph.what is the average speed in miles per hour..
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TIME TAKEN IN COVERING 25 MILES AT A SPEED OF 30M.P.H = 50MINS
TIME TAKEN IN COVERING 50 MILES AT A SPEED OF 40M.P.H = 75MINS
TIME TAKEN IN COVERING 24 MILES AT A SPEED OF 24M.P.H = 60 MINS
SPEED (X) - TIME (W) - WX
30- 50- 1500
40- 75- 3000
10- 6- 60
24- 60- 1440
Average speed = 6000/191
=31.41
TIME TAKEN IN COVERING 50 MILES AT A SPEED OF 40M.P.H = 75MINS
TIME TAKEN IN COVERING 24 MILES AT A SPEED OF 24M.P.H = 60 MINS
SPEED (X) - TIME (W) - WX
30- 50- 1500
40- 75- 3000
10- 6- 60
24- 60- 1440
Average speed = 6000/191
=31.41
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