If a boat can travel 20 km upstream in 5 hours, what is the speed of the boat in

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Question: If a boat can travel 20 km upstream in 5 hours, what is the speed of the boat in still water if the current is 2 km/h?

Options:

Correct Answer: 6 km/h

Solution:

Speed upstream = Distance/Time = 20 km / 5 hours = 4 km/h. Speed in still water = Speed upstream + Speed of current = 4 km/h + 2 km/h = 6 km/h.

If a boat can travel 20 km upstream in 5 hours, what is the speed of the boat in still water if the current is 2 km/h?

If a boat can travel 20 km upstream in 5 hours, what is the speed of the boat in still water if the current is 2 km/h?

Step 1: Identify the distance traveled upstream, which is 20 km.
Step 2: Identify the time taken to travel that distance, which is 5 hours.
Step 3: Calculate the speed upstream using the formula: Speed = Distance / Time.
Step 4: Substitute the values: Speed upstream = 20 km / 5 hours.
Step 5: Perform the calculation: 20 km / 5 hours = 4 km/h.
Step 6: Identify the speed of the current, which is 2 km/h.
Step 7: Calculate the speed of the boat in still water using the formula: Speed in still water = Speed upstream + Speed of current.
Step 8: Substitute the values: Speed in still water = 4 km/h + 2 km/h.
Step 9: Perform the calculation: 4 km/h + 2 km/h = 6 km/h.

Relative Speed – Understanding how the speed of a boat is affected by the current when traveling upstream and downstream.
Speed Calculation – Calculating speed using the formula Speed = Distance / Time.