Mathematics
NULL
Medium
Question
A boat 3 m long and 2 m wide floating on a lake sinks by 1 cm when a man boards it. What is the man's mass?
A
12 kg
B
60 kg
✓ Official correct answer
C
72 kg
D
96 kg
Community credibility
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A
12 kg
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B
60 kg
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C
72 kg
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D
96 kg
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Explanation
Displaced volume = 3 × 2 × 0.01 = 0.06 m³ of water ≈ 60 kg.