Question

. If the usual uniform speed of a train is increased by 5 km/h, it takes 4/
5

hr less than the

usual time to cover a distance of 360 km. Find the usual uniform speed of the train​

Answer 1

Answer:

speed =45km/hr

hope it helps you❤❤❤❤❤

Step-by-step explanation:

Given distance=360 km. 

Let the speed of the train be x km/hr.

Speed when increased by 5 km/hr =(x+5) km/hr

x360−(x+5)360=1

x(x+5)[360x+1800−360x]=1

x2+5x−1800=0

x2+45x−40x−1800=0

x(x+45)−40(x+45)=0

(x−40)(x+45)=0

x=40,−45

The speed of the train is 40 km/hr.