The average salary per month of 55 employees in a company is Rs 8500. If the managers salary is added, the average salary increases to Rs 8800, what is the salary of the manager ?
Choose the correct answer:
A) 10000 B) 12000 C) 23000 D) 25300 E) 45000

Rationale: explanation : salary of the manager = ( 56 * 8800 - 55 * 8500 ) = 25300 answer : d
Answer: D