Question

A train 132km at a uniform speed , if the speed has been 11km / hr. more it would have taken 1hr less for the same journey. Find the speed of the train
​

Answer 1

Answer:

44 km

Step-by-step explanation:

Let x km per hour be the average speed of the passenger train, then the average speed of the express train will be (x+11) km per hour.

The time taken by the passenger train is x132 hour and the time taken by the express train is (x+11)132 hour. So,

x+11132=x132+1

x2+11x−1452=0

x2+44x−33x−1452=0

(x−33)(x+44)=0

x=33,x=−44

The speed cannot be negative, so the speed of the passenger train is 33 km per hour and the speed of the express train is 33+11=44 km per hour.

MARK AS BRAINLIST