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If a boat can travel at 20 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 20 km/h in still water and the current is 5 km/h, what is the speed of the boat downstream?

Options:

  1. 15 km/h
  2. 20 km/h
  3. 25 km/h
  4. 30 km/h

Correct Answer: 25 km/h

Solution: 

Downstream speed = Speed in still water + Speed of current = 20 km/h + 5 km/h = 25 km/h.

If a boat can travel at 20 km/h in still water and the current is 5 km/h, what i

Practice Questions

Q1
If a boat can travel at 20 km/h in still water and the current is 5 km/h, what is the speed of the boat downstream?
  1. 15 km/h
  2. 20 km/h
  3. 25 km/h
  4. 30 km/h

Questions & Step-by-Step Solutions

If a boat can travel at 20 km/h in still water and the current is 5 km/h, what is the speed of the boat downstream?
  • Step 1: Identify the speed of the boat in still water, which is 20 km/h.
  • Step 2: Identify the speed of the current, which is 5 km/h.
  • Step 3: To find the downstream speed, add the speed of the boat in still water to the speed of the current.
  • Step 4: Perform the addition: 20 km/h + 5 km/h = 25 km/h.
  • Step 5: The speed of the boat downstream is 25 km/h.
  • Relative Speed – Understanding how to calculate the effective speed of a boat when considering the influence of water current.
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