The average salary per head of the entire staff of an office including the officers and clerks is Rs.90. The average salary of officers is Rs.600 and that of the clerks is Rs.84. If the number of officers is 2, find the number of officers in the office? Choose the correct choice from the following answers.
A) 1 B) 8 C) 7 D) 6 E) 2

Rationale: 6 * 22 = 132 7 * 19 = 133 - - - - - - - - - - - - - - 1 . answer : a
Answer: A