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  9. Q65

ibps-rrb-os1 2019 · Question 65 of 186

The average salary per head of all the workers of an office is Rs 85. The average salary of 12 officer is Rs 525 and the average salary of the rest is Rs 75. Find the total numbers of workers?

Average

  1. A620
  2. B540Correct
  3. C910
  4. D720
  5. E840

Answer: B. 540

Explanation

Let total no. of workers = x Total salary = x × 85 ------(i) As per the question, Total salary = 12 × 525 + (x – 12) × 75 -------(ii) From (i) & (ii), ⇒ x × 85 = 12 × 525 + (x – 12) × 75 ⇒ 85x – 75x = 6300 – 900 ⇒ 10x = 5400 ⇒ x = 540

Source: IBPS RRB PO (Scale 1) Officer 2019 Mains Previous Year Paper — Answer Key & Detailed Solutions (memory-based compilation, ixamBee) · memory-based

← Q64View full paper (186 questions)Q66 →

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