Subject
Quantitative Aptitude
Topic
Average
The average salary of the entire staff in a office is Rs. 120 per month. The average salary of officers is Rs. 460 and that of non- officers is Rs. 110. If the number of officers is 15, then find the number of non-officers in the office.
The average salary of the entire staff in a office is Rs. 120 per month. The average salary of officers is Rs. 460 and that of non- officers is Rs. 110. If the number of officers is 15, then find the number of non-officers in the office.
ক)
610খ)
510গ)
410ঘ)
Can’t be determinedঙ)
None of theseExplanation
Let number of non-officers = a, Then Total salary of officers = 15 × 460 = 6900, Total salary of non-officers = a × 110. Total salary of all employees = 120 × (15 +a) Then, Salary of all employees = Salary of officers + Salary of non-officers 120 × (15 + a) = 15 × 460 + 110a 1800 + 120a = 6900 + 110a 120a – 110a = 6900 – 1800 10a = 5100 a = 510 Hence, number of non-officers = 510Related questions
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