A train covers a distance of 10 km in 12 minutes. If its speed is decreased by 5 km/hr,
ee time taken by it to cover the same distance will be
1)10min
2) 11 min 20 sec
3) 13 mins
4)13 min 20sec
Answers
Answered by
0
Answer:
13 min 20 sec is the right answer
Answered by
1
Answer:
d= 10km t= 12min = (12/60) hr = 1/5 hr
Speed= d/t
= 10/(1/5)
= 10x5 = 50km/hr
since the speed is reduced by 5km/hr
New speed= 45km/hr
New time= distance/new speed
= 10/45 hr = (10/45) x 60 min
= 40/3 min = 13 min 20 sec
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