Subject: General Aptitude · Chapter: Volume and Surface Area · Exam: · Marks: · Difficulty:
A boat having a length 3 m and breadth 2 m is floating on a lake. The boat sinks by 1 cm when a man gets on it. The mass of man is
(a)12 kg
(b)60 kg
(c)72 kg
(d)96 kg
Answer
Answer (as printed): B
Explanation
Volume of water displaced $=(3 \times 2 \times 0.01) \mathrm{m}^{3}=0.06 \mathrm{m}^{3}$. ∴ Mass of man = Volume of water displaced × Density of water $=(0.06 \times 1000) \mathrm{kg}=60 \mathrm{kg}$.