On a track of 100 km a train travels the furst 30 km at a speed of 30km/h. how fast must train travel the next 70km so that the average speed of train for entire trip becomes 40km/h
Answers
Answered by
0
average speed is 40kmph and total distance is 100km
so time taken is 100/40=2.5 hr
distance covered in 1st hris 30km
remaining 70km should be coverd in1.5 hr
so speed is 70/1.5=700/15=160/3=53.3kmph
so time taken is 100/40=2.5 hr
distance covered in 1st hris 30km
remaining 70km should be coverd in1.5 hr
so speed is 70/1.5=700/15=160/3=53.3kmph
Similar questions