A train does a journey without stoping in 8 hrs . If it had travelled 5 km an hour faster , it would have done the journey in 6hr40min. What it is slower speed?
Answers
Answered by
1
let the slower speed be x km/hr
and the faster speed be (x+5) km/hr
speed×time=distance travelled
according to condition,
(x+5)*20/3=(20x+100)/3
therefore the distance would be (20x+100)/3
therefore slower speed ×8=(20x+100)/3
24x=20x+100
4x=100
x=25 km/hr
and the faster speed be (x+5) km/hr
speed×time=distance travelled
according to condition,
(x+5)*20/3=(20x+100)/3
therefore the distance would be (20x+100)/3
therefore slower speed ×8=(20x+100)/3
24x=20x+100
4x=100
x=25 km/hr
Similar questions