A train travels 360 km at a uniform speed, if speed has been increased it will take one hour less for the same journey then find
2 answers:
Answer:
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
x
360
−
(x+5)
360
=1
x(x+5)
[360x+1800−360x]
=1
x
2
+5x−1800=0
x
2
+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.
Step-by-step explanation:
thanks... ☺️
You might be interested in
Answer:
The system has infinite solutions
Step-by-step explanation:
For a system of two linear equations it is always true that if one equation is a linear combination of another, then the system will have infinite solutions.
Suppose we have the following system:
If there is a number n for which it is fulfilled that
Then the system has infinite solutions.
In this case the system is:
Observe that:
Then
The system has infinite solutions