A train covers a distance of 12 km in 12 minutes. If its speed is decreased by 5 km/h, then the time taken by it to cover the distance of 22 km will be:

24 minutes 

Speed = \(\frac{Distance }{time }\)

= \(\frac{12 × 60  }{12 }\)

= 60 km/h

Reduced speed = 60 - 5 = 55 km/h

Time to cover 22 km= \(\frac{22 }{55 }\)

= \(\frac{2 }{5}\) hour

= 24 minutes