If a boat can travel 60 km downstream in 3 hours, what is the speed of the boat

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Question: If a boat can travel 60 km downstream in 3 hours, what is the speed of the boat in still water if the speed of the stream is 5 km/h?

Options:

Correct Answer: 25 km/h

Solution:

Speed downstream = Distance / Time = 60 / 3 = 20 km/h. Speed of boat = Speed downstream - Speed of stream = 20 - 5 = 15 km/h.

If a boat can travel 60 km downstream in 3 hours, what is the speed of the boat in still water if the speed of the stream is 5 km/h?

If a boat can travel 60 km downstream in 3 hours, what is the speed of the boat in still water if the speed of the stream is 5 km/h?

Step 1: Identify the distance traveled downstream, which is 60 km.
Step 2: Identify the time taken to travel that distance, which is 3 hours.
Step 3: Calculate the speed downstream using the formula: Speed = Distance / Time.
Step 4: Substitute the values: Speed downstream = 60 km / 3 hours = 20 km/h.
Step 5: Identify the speed of the stream, which is 5 km/h.
Step 6: Calculate the speed of the boat in still water using the formula: Speed of boat = Speed downstream - Speed of stream.
Step 7: Substitute the values: Speed of boat = 20 km/h - 5 km/h = 15 km/h.

Relative Speed – Understanding how the speed of a boat is affected by the current of the stream.
Speed Calculation – Calculating speed using the formula: Speed = Distance / Time.
Downstream vs. Still Water Speed – Differentiating between the speed of the boat in still water and its speed downstream.