Learn + Solve: Shortcut, Trap & Fast Route Click to view shortcut, steps, and common mistake

Learn + solve

Shortcut used, common trap, and the fastest solving route

Shortcut used: Use downstream = boat speed + stream speed and upstream = boat speed - stream speed.

Solve in 3 steps:

1. Identify upstream or downstream.
2. Apply the correct effective speed.
3. Use distance/time relation.

Common mistake: Do not add stream speed in upstream questions.

A boat's downstream speed is 18 km/h and upstream speed is 10 km/h. What is the speed of the stream?

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Boats and Streams · Easy Q2341: In a Boats and Streams practice set, a student answers 18 questions correctly out of 24. … Boats and Streams · Easy Q9139: A boat moves at 18 km/h in still water and 14 km/h upstream. What is the speed of the str… Boats and Streams · Medium Q9699: A boat covers 30 km downstream in 2 hours and the same distance upstream in 3 hours. What…

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