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OpenStudy (anonymous):
The average salary of workers in an industry is Rs. 2000, the average salary of 150 technicians being Rs. 4000, and the non-technicians being Rs. 1,250. The total number of workers is a) 450 b) 300 c) 550 d) 500
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OpenStudy (anonymous):
c) 550
OpenStudy (anonymous):
but how to solve it
OpenStudy (anonymous):
method??
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