Quantitative Aptitude – Boats & Streams
Handle upstream and downstream speed problems using flow adjustments.
1. Definitions
Downstream speed = Boat speed + Stream speed; Upstream = Boat speed − Stream speed.
2. Formula
Time = Distance / Speed. Use correct speed for upstream/downstream leg.
3. Quick Tips
4. Common Errors
5. Revision Checklist
Summary: Set basic speed variables, apply formulas carefully for upstream/downstream legs, and calculate time directly.