Saving of work done and power by fitting an air vessel to double acting reciprocating pump is of the order of

Saving of work done and power by fitting an air vessel to double actin

1.	Saving of work done and power by fitting an air vessel to double acting reciprocating pump is of the order of
A.	9.2%
B.	9.2%
C.	8.8%
D.	4.8%
Answer» B. 9.2%