45 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 4m3 , then the rise in the water level in the tank will be:	Answers
A) 20 cm  B) 25 cm  C) 35 cm  D) 50 cm  E) None of these
None of thesexplanation:   Total volume of water displaced =(4 x 45) m3 = 180 m3   Rise in water level = 180/40Ã—20= 0.225m = 22.5cm   Answer: None of these
<result>E</result>
45 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 4m3 , then the rise in the water level in the tank will be: