There were 500 workers working in a factory. Their mean wage was calculated as Rs. 200. Later on it was discovered that the wages of 2 workers were misread as 180 and 20 in place of 80 and 220. Find out the correct average.
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Step-by-step explanation:
Total wages = 500
Mean wages = 200
total wages = 500×200
= 100000
wages of the 45 workers = 100000 - 200
= 99800
wages of 50 workers = 99800+80+220
= 100100
Mean = 100100/500
=200.2
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