The average monthly salary of 660 workers in a factory is…

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The average monthly salary of 660 workers in a factory is Rs. 380. The average monthly salary of officers is Rs. 2100 and the average monthly salary of the other workers is Rs. 340. Find the number of other workers.

  1. A. 645
  2. B. 650
  3. C. 640
  4. D. 642

Answer: Option A

Here is complete explanation of The average monthly salary of 660 workers in a factory is….

Solution(By ExamCraze Team)

$$eqalign{ & {text{Total}},{text{salary}},{text{of}},660,{text{workers}} cr & = 660 times 380 cr & = Rs.,250800 cr & {text{If}},{text{other}},{text{workers}},{text{be}},x;,{text{then}}, cr & = left[ {left( {660 - x} right) times 2100} right] + 340x cr & = 250800 cr & Or,,1386000 - 2100x + 340x = 250800 cr & 1760x = 1135200 cr & {text{Hence}},,x = frac{{1135200}}{{1760}} = 645 cr & {text{Number}},{text{of}},{text{other}},{text{workers}} = 645 cr} $$

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