A person can swim at a speed of 5 km/h in still water. If the speed of the curre

Practice Questions

Q1
A person can swim at a speed of 5 km/h in still water. If the speed of the current is 2 km/h, what is the speed of the person swimming upstream?
  1. 3 km/h
  2. 5 km/h
  3. 7 km/h
  4. 9 km/h

Questions & Step-by-Step Solutions

A person can swim at a speed of 5 km/h in still water. If the speed of the current is 2 km/h, what is the speed of the person swimming upstream?
  • Step 1: Understand that the person can swim at a speed of 5 km/h in still water.
  • Step 2: Know that there is a current that flows at a speed of 2 km/h.
  • Step 3: When swimming upstream, the current works against the swimmer's speed.
  • Step 4: To find the speed of the person swimming upstream, subtract the speed of the current from the speed in still water.
  • Step 5: Calculate the speed upstream: 5 km/h (swimming speed) - 2 km/h (current speed) = 3 km/h.
  • Step 6: Conclude that the speed of the person swimming upstream is 3 km/h.
  • Relative Speed – Understanding how to calculate the effective speed of a swimmer against a current.
  • Basic Arithmetic – Applying subtraction to find the resultant speed when two speeds are involved.
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