Boat and Stream: Concept, Technique and Solution-01: Shortcut Tricks: By...

Resultant speed is the only thing which makes the chapter "Boat and
Stream" different from "Time and distance" and "Train".
"Boat and Stream" is in the continuation of Time and Distance and
Train, so we should always take all these three chapters as a whole. Watch the
video: "Boat and
Stream: Concept, Technique and Solution-01": https://youtu.be/6qjjen15V-4https://youtu.be/6qjjen15V-4