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In a group of 60 workers, the average salary is $80 a day per worker. If some of the workers earn $75 a day and all the rest earn $100 a day, how many workers earn $75 a day?
A. 12
B. 24
C. 36
D. 48
E. 54
A. 12
B. 24
C. 36
D. 48
E. 54
07 Mar 2022, 10:26
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Bunuel
In a group of 60 workers, the average salary is $80 a day per worker. If some of the workers earn $75 a day and all the rest earn $100 a day, how many workers earn $75 a day?
A. 12
B. 24
C. 36
D. 48
E. 54
\(60*80 = w*75 + 100(60-w)\)A. 12
B. 24
C. 36
D. 48
E. 54
Or, \(4800 = 75w + 6000 - 100w\)
Or, \(25w = 1200\)
Or, \(w = 48\), Answer must be (D)
