Ravi can row downstream at 9 km/h and upstream at 5 km/h. Find the speed of Ravi in still water and speed of current.

Given, downstream speed = 9 km/h

and upstream speed = 5 km/h

According to the formula,

Ravi's speed in still water

= \( \Large \frac{1}{2} \) (Speed downstream + Speed upstream)

= \( \Large \frac{1}{2} \) (9 + 5) = \( \Large \frac{14}{2 }\) = 7 km/h

and speed of current

= \( \Large \frac{1}{2} \) (Speed downstream - Speed upstream)

= \( \Large \frac{1}{2} \) (9 -5) = \( \Large \frac{4}{2} \) = 2 km/h