Calculating Current in a Multiloop Circuit

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To calculate the current through the ammeter in a multiloop circuit, it is essential to determine the current flowing through each resistor. The resistance of an ideal ammeter is considered negligible for this calculation, as specified by the teacher. Understanding the potential difference across the ammeter is also crucial for accurate results. By analyzing the circuit and applying Ohm's law, one can deduce the current that flows through the ammeter. This approach will lead to the correct solution for the current measurement.
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What is the current through the ammeter in the figure?

I can't for the life of me figure out how to do this question ? could someone please help with this ??
 
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What is the resistance of an ideal ammeter?
 
I don't think the resistance of the ammeter is factored, take it as negligible.
 
pilot-piper said:
I don't think the resistance of the ammeter is factored, take it as negligible.

I was, why don't you?
Now what is the potential difference across it?
You need to find the current through each resistor to
deduce what must flow through the ammeter.
 
For the purpose of this question the resistance of the ammeter is considered negligible as has been instructed by teacher
 
The book claims the answer is that all the magnitudes are the same because "the gravitational force on the penguin is the same". I'm having trouble understanding this. I thought the buoyant force was equal to the weight of the fluid displaced. Weight depends on mass which depends on density. Therefore, due to the differing densities the buoyant force will be different in each case? Is this incorrect?

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