# A car takes 2 hours to reach a destination by travelling at the speed of 60 km/ hr. How long will it take when the car travels at the speed of 80km/ hr?

by Georgephilip

Log in to add a comment

by Georgephilip

Log in to add a comment

**It is given that a car takes 2 hours to reach the destination with a speed of 60km/hr Let it take x hours to reach the destination with a speed of 80 km/hr**

**It is a case of inverse proportionality(as here, if speed increases then time decreases and if speed decreases the time increases)**

**So 60 x 2 =80 X x (because x1y1=x2y2)**

**therefore x= 60 x 2/80 =3/2 hrs=1 1/2 hrs**