The average monthly salary of 20 employes in an organisation is Rs.1500. If the manager's salary is added, then the average salary increases by Rs.100. What is the manager's monthly salary?	Select:	A) Rs. 2000	B) Rs. 2400	C) Rs. 3600	D) Rs. 4000	E) None
Solution   Manager's monthly salary	= Rs.(1600x21-1500x20)   = Rs. 3600   Answer Rs. 3600
<result>C</result>
The average monthly salary of 20 employes in an organisation is Rs.1500. If the manager's salary is added, then the average salary increases by Rs.100. What is the manager's monthly salary?