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? A. 1540 B. 960 C. 840 D. 1020
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Answer: D) 1020
Step-by-step explanation:
Let the number of passed clerks be x
Total salary for clerks = Rs.84x
Total salary of officers Rs.12×600 = Rs.7200
Total salary of the staff of office
(Number of officers + Number of clerks)×90
84x+7200=(12+x)×90
=1080+90x
6x=7200−1080=6120
x=61206=1020
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