A motorcyclist drives from `A` to `B` with a uniform speed of `30 km h^(-1)` and returns back with a
Channel: Doubtnut
Date: 2020-07-26

A motorcyclist drives from `A` to `B` with a uniform speed of `30 km h^(-1)` and returns back with a speed of `20 kmh^(-1)`. Find its average speed.