Train runs for 2 hrs at a speed of 35 kmph. it runs for 3.5 hrs at the speed of 60 kmph and then runs for 2.5 hrs at the speed of 70 kmph. find the average speed of the train.
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total distance =2×35+3.5×60+2.5×70
=70+210+175=455km
total time =2+2.5+3.5=8hrs
average speed =total total distance/total time
=455/8kmph
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=70+210+175=455km
total time =2+2.5+3.5=8hrs
average speed =total total distance/total time
=455/8kmph
MARK AS brainliest
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