Question

a car travels 800 kilometre distance between from Steel Industries had 10 km per hour faster it should have taken to our life find the speed of car

Answer 1

distance = 600 km

Let the uniform speed of car be x

so time= distance/speed

=600/x

by the condition given in your question we get equation

(600/x)-(2)=600/(x+10)

(600-2x)/x=600/(x+10)

(600-2x)(x+10)=600x

600x-2x^2+6000-20x=600x

-2x^2+580x+6000=600x

-2x^2-20x+6000=0

x^2+10x-3000=0

find the solution of this and get the answer