50 men took a dip in a water tank 40 m long and 20 m broad on a religious day. If the average displacement of water by a man is 3m3 , then the rise in the water level in the tank will be: Answers
A) 20 cm
B) 25 cm
C) 35 cm
D) 18.75 cm
E) None of these
Explanation:   Total volume of water displaced =(3 x 50) m3 = 150 m3   Rise in water level = 150/40Ã—20= 0.1875m = 18.75cm   Answer: 18.75 cm
<result>D</result>
50 men took a dip in a water tank 40 m long and 20 m broad on a religious day. If the average displacement of water by a man is 3m3 , then the rise in the water level in the tank will be: