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Answer :
Answer:
54 kg
Explanation:
Mass of person = 93 kg = [tex]m_p[/tex]
Mass of water = 62 kg = [tex]m_w[/tex]
Dividing the above two masses we get
[tex]\frac{m_p}{m_w}=\frac{93}{62}\\\Rightarrow \frac{m_p}{m_w}=1.5\\\Rightarrow m_p=1.5m_w[/tex]
Hence, the mass of the person is 1.5 times the mass of the water in them
Now, Mass of person = 81 kg = [tex]m_p[/tex]
[tex]m_p=1.5m_w\\\Rightarrow m_w=\frac{1}{1.5} m_p\\\Rightarrow m_w=\frac{1}{1.5} \times 81\\\Rightarrow m_w=54\ kg[/tex]
So, the mass of water in a person that has mass of 81 kg is 54 kg
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