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)?
Shital covers a certain distance in 9 hours at the speed of 40 km/h.
Distance covered by her =Â $$speed\times\ time\ taken$$
= $$40\times9$$
= 360 km
If she wants to cover the same distance in 6 hours.
New speed = $$\frac{distance\ covered}{time\ taken}$$
= $$\frac{360}{6}$$
= 60 km/h
increase in her speed = 60-40
= 20 km/h
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