A train, travelling at a uniform speed for 360 km, would have taken 48 minutes less to travel the same distance if its speed were 5 km/hr more. Find the original speed of the train.
Answers
Answer:
hence, original speed of train = 45 km/h
Step-by-step explanation:
let original speed of train = x km/h
we know,
time = distance/speed
first case
———————
time taken by train = 360/x hour
second case
——————————
time taken by train its speed increase 5 km/h = 360/( x + 5)
question says that
time taken by train in first - time taken by train in 2nd case = 48 min = 48/60 hour
360/x - 360/(x +5) = 48/60 = 4/5
360{ 1/x - 1/(x +5) } = 4/5
360 ×5/4 { 5/(x² +5x )} =1
450 x 5 = x² + 5x
x² +5x -2250 = 0
x = { -5±√(25+9000) }/2
=(-5 ±√(9025) )/2
=(-5 ± 95)/2
= -50 , 45
but x ≠ -50 because speed doesn't negative
so, x = 45 km/h
hence, original speed of train = 45 km/h
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Answer:
Let me ask you the same question ??
What is your answer of it.
The answer is itself in the question that we can't do anything if situation is not in your hand.
It's true that sometimes we can't change our situations in that case what can we do??
We can make changes in ourselves, we should change according to the situation that what is best for us in that instance.
The things you are fail to change let them go.
Dont waste your time on changing that try to change yourself and do the best that you can.
okay bye and take care of yourself dude!!
o