Shital covers a certain distance in 9 hours at the speed of 40 km/h. If she wants to cover the same distance in 6 hours, then by how much will she have to increase her speed (in km/h)?
Answer & explanation
Correct answer: option 4
Distance = Speed × Time
Distance traveled by Shital = 40 × 9 = 360 km
To complete the journey in 6 hours ,
Speed = \(\frac{DIstance}{Time}\)
= \(\frac{360}{6}\)
= 60 km/h
So , Increment in speed = 60 - 40 = 20 km/h