the mean salary paid to 1000 workers of a factory was found to be Rs. 180.40 later it was discovered to the wages of two workers wrongly taken as Rs. 297 and Rs. 165 instead of Rs. 197 and Rs. 185 find the correct mean

Mean salary of 1000 workers = Rs 180.40

∴Total salary paid to 1000 workers = Rs 180.40 × 1000 = Rs 180400

The wages of two workers were wrongly taken as Rs 297 and Rs 165 instead of Rs 197 and Rs 185.

∴Correct salary paid to 1000 workers = Rs (180400 - 297 - 165 + 197 + 185)

 = Rs 180320

∴Correct mean salary =  

Hope you get it.

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