Question 09.
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 80 km/hr?
Open in App
Solution
Let the number of hours be x. Speed(inkm/hr)6080Time(inhours)2x
Here, the speed of car and time are in inverse proportion.
∴6080=x2⇒x×80=60×2⇒x=60×280=32=112hrs.
Hence, the car will take 112 hours to reach its destination.