If a boat can travel 40 km upstream in 4 hours, and the speed of the current is

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What’s inside this PDF?

Question: If a boat can travel 40 km upstream in 4 hours, and the speed of the current is 2 km/h, what is the speed of the boat in still water?

Options:

8 km/h
10 km/h
12 km/h
14 km/h

Correct Answer: 10 km/h

Solution:

Speed upstream = Distance/Time = 40 km / 4 h = 10 km/h. Speed of boat in still water = Speed upstream + Speed of current = 10 km/h + 2 km/h = 12 km/h.

If a boat can travel 40 km upstream in 4 hours, and the speed of the current is

Practice Questions

If a boat can travel 40 km upstream in 4 hours, and the speed of the current is 2 km/h, what is the speed of the boat in still water?

8 km/h
10 km/h
12 km/h
14 km/h

Questions & Step-by-Step Solutions

If a boat can travel 40 km upstream in 4 hours, and the speed of the current is 2 km/h, what is the speed of the boat in still water?

Step 1: Identify the distance traveled upstream, which is 40 km.
Step 2: Identify the time taken to travel that distance, which is 4 hours.
Step 3: Calculate the speed upstream using the formula: Speed = Distance / Time.
Step 4: Substitute the values: Speed upstream = 40 km / 4 h = 10 km/h.
Step 5: Identify the speed of the current, which is 2 km/h.
Step 6: Calculate the speed of the boat in still water by adding the speed upstream and the speed of the current: Speed of boat in still water = 10 km/h + 2 km/h.
Step 7: Perform the addition: 10 km/h + 2 km/h = 12 km/h.

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

If a boat can travel 40 km upstream in 4 hours, and the speed of the current is

What’s inside this PDF?

If a boat can travel 40 km upstream in 4 hours, and the speed of the current is

Practice Questions

Questions & Step-by-Step Solutions

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