Answers

2014-12-09T14:37:29+05:30

Total number of workers is considered as x

Average of 12 officers salary = 12 x 400 = 4800

4800 + 56x = ( 12 + x ) x 60

4800 + 56x = 720 + 60x

4x = 4080

X = 1020

∴ Total number of workers = 12 + x = 12 + 1020 = 1032

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assumption is wrong. It should non-officer worker.
2014-12-09T14:42:14+05:30
Total no. of workers be x
Their average salary = Rs 60
Total salary of all workers = 60x
Average salary of 12 officers = Rs 400
Total salary of 12 officers = 12 × 400 = Rs 4800
Average salary of rest of employees = Rs 56
Total salary of these rest of employees = (x - 12)×56
⇒ (x - 12)×56 + 4800 = 60x
⇒56x - 672 + 4800 = 60x
⇒ 4x = 4128
⇒ x = 1032
Total number of workers in the factory = 1032
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