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If a boat can travel at 15 km/h in still water and the current is 5 km/h, what i

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Question: If a boat can travel at 15 km/h in still water and the current is 5 km/h, what is the speed of the boat upstream?

Options:

  1. 10 km/h
  2. 15 km/h
  3. 20 km/h
  4. 25 km/h

Correct Answer: 10 km/h

Solution: 

Speed upstream = speed of boat - speed of current = 15 - 5 = 10 km/h.

If a boat can travel at 15 km/h in still water and the current is 5 km/h, what i

Practice Questions

Q1
If a boat can travel at 15 km/h in still water and the current is 5 km/h, what is the speed of the boat upstream?
  1. 10 km/h
  2. 15 km/h
  3. 20 km/h
  4. 25 km/h

Questions & Step-by-Step Solutions

If a boat can travel at 15 km/h in still water and the current is 5 km/h, what is the speed of the boat upstream?
  • Step 1: Identify the speed of the boat in still water, which is 15 km/h.
  • Step 2: Identify the speed of the current, which is 5 km/h.
  • Step 3: To find the speed of the boat when going upstream, subtract the speed of the current from the speed of the boat.
  • Step 4: Perform the calculation: 15 km/h (speed of boat) - 5 km/h (speed of current) = 10 km/h.
  • Step 5: The speed of the boat upstream is 10 km/h.
  • Relative Speed – Understanding how to calculate the effective speed of a boat against a current.
  • Basic Arithmetic – Applying subtraction to find the difference between the boat's speed and the current's speed.
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