A river flows at a speed of 4 km/h. If a boat travels downstream at 12 km/h, wha

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Question: A river flows at a speed of 4 km/h. If a boat travels downstream at 12 km/h, what is the speed of the boat relative to the river? (2020)

Options:

8 km/h
4 km/h
12 km/h
16 km/h

Correct Answer: 8 km/h

Exam Year: 2020

Solution:

Speed of boat relative to river = Speed of boat downstream - Speed of river = 12 km/h - 4 km/h = 8 km/h.

A river flows at a speed of 4 km/h. If a boat travels downstream at 12 km/h, wha

Practice Questions

A river flows at a speed of 4 km/h. If a boat travels downstream at 12 km/h, what is the speed of the boat relative to the river? (2020)

8 km/h
4 km/h
12 km/h
16 km/h

Questions & Step-by-Step Solutions

A river flows at a speed of 4 km/h. If a boat travels downstream at 12 km/h, what is the speed of the boat relative to the river? (2020)

Step 1: Identify the speed of the river, which is 4 km/h.
Step 2: Identify the speed of the boat when it is going downstream, which is 12 km/h.
Step 3: To find the speed of the boat relative to the river, subtract the speed of the river from the speed of the boat downstream.
Step 4: Perform the subtraction: 12 km/h (boat speed) - 4 km/h (river speed) = 8 km/h.
Step 5: The result, 8 km/h, is the speed of the boat relative to the river.

Relative Speed – Understanding how to calculate the speed of an object in relation to another moving object.
Downstream and Upstream Concepts – Differentiating between the speed of a boat when moving downstream versus upstream.

A river flows at a speed of 4 km/h. If a boat travels downstream at 12 km/h, wha

What’s inside this PDF?

A river flows at a speed of 4 km/h. If a boat travels downstream at 12 km/h, wha

Practice Questions

Questions & Step-by-Step Solutions

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