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 into it. The mass of the man is :	Pick:
A) 50 kg
B) 60 kg
C) 70 kg
D) 80 kg
E) None of these
Explanation:   In this type of question, first we will calculate the volume of water displaces then will multiply with the density of water.   Volume of water displaced = 3*2*0.01= 
<gadget id="calculator">3*2*0.01</gadget>
<output>0.06</output>
0.06 m cube   Mass of Man= Volume of water displaced * Density of water   = 0.06 * 1000= 
<gadget id="calculator">0.06 * 1000</gadget>
<output>60</output>
60 kg   Option 60 kg
<result>B</result>
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 into it. The mass of the man is :