# Easy Time, Speed & Distance Solved QuestionAptitude Discussion

 Q. A passenger train takes two hours less for a journey of 300 km if its speed is increased by 5 km/hr from its normal speed. The normal speed is:
 ✖ A. 35 km/hr ✖ B. 50 km/hr ✔ C. 25 km/hr ✖ D. 30 km/hr

Solution:
Option(C) is correct

Let the normal speed be '$s$' km/hr

Then new speed = $(s+5)$ km/hr

$\dfrac{300}{s}-2=\dfrac{300}{s+5}$

On solving this equation we get:

$s$ = 25 km/hr

## (2) Comment(s)

NerdBird
()

Someone solve: 2s^2+10^2+1500.

*^2 stands for raised to.

Anonymous
()

your equation is wrong. It should be Speed^2+5Speed-750=0

solution are 25 or -30 for that equation.

as speed can not be negative, the solution is 25.