A person travels from city $A$ to city $B$ at a speed of $40\text{ km/h}$ and returns from city $B$ to city $A$ at a speed of $60\text{ km/h}$. What is his average speed for the entire journey?

Options:

• A: $48\text{ km/h}$
• B: $50\text{ km/h}$
• C: $52\text{ km/h}$
• D: $54\text{ km/h}$

Related Practice Questions:

• Which of the following artifacts, extensively found at Burzahom and Gufkral, specifically indicates that the Neolithic inhabitants of Kashmir practiced sewing animal skins for clothing to survive the harsh winters?
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• The first human colonization of the fertile Ganga plains, as evidenced by archaeological discoveries at Sarai Nahar Rai and Mahadaha, took place during which period?
• Which prehistoric site located in the Thar Desert of Rajasthan provides a continuous and undisturbed profile of Lower, Middle, and Upper Paleolithic cultures?