Question

4. The mean wage of 100 workers working in a factory running two shifts of 60 and 40 workers respectively is
Rs. 38. The mean wage of 60 labourers working in the morning shift is Rs. 40. Find the mean-wage of
labourers working in the evening shift. ​

Answer 1

Explanation:

Mean wage of 150 workers=Rs.114.00

∴Total wage of 150 workers=150×114.00=Rs.17100

No of person work in first shift=60

Mean wages of 60 workers=Rs.121.50

∴ Total wage of 60 workers=60×121.50=Rs.7290

No of person work in first shift=40

Mean wages of 60 workers=Rs.107.75

∴ Total wage of 60 workers=40×107.75=Rs.4310

Total wages of the person who work in first and second shift=7290+4310=Rs.11600

∴Total wages of the person who work in third shift=17100−11600=Rs.5500

Mean wages of those who work in third shift=

50

5500

=Rs.110

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