Question

A car covers a distance of 240 km with some speed If the speed is increased by 20 km/hr, it will cover the same distance in 2 hours less Find the speed of the car​

Answer 1

Answer-:

The equation is

X^2+20X-2400=0

And we can apply quadratic formula to find the value of X.

OR

Using splitting middle term also you can find the value of X.

Answer 2

The Speed was 12.6 km/hr

or

$- 5 + 2 \sqrt{85} kmph$