Question

If a train covers 14 km in 12 min then the speed of the train is​

Answer 1

Correct question= If a train travel 10 km in 12 minute then how much time take if speed is decrease by 5 km/h?

Answer:

Distance covered in 12 minutes = 10 km.

So the speed of the train = (10/12)×60= 50km/hr

The reduced speed = (50–5) km/hr = 45 km/hr

So time taken to cover 45 km = 60 min

Time taken to cover 10 km = (60/45)×10 =40/3 = 13 1/3 min. = 13 min.20 sec.

Answer 2

distance train cover = 14km

Time taken by Train = 12min

Speed = Distance

_________

Time

= 14

_______

10/60

= 14 × 60 / 10

= 14 × 6

= 84 km/h