in a factory there are 60% labours 30% scribes and 10% executive on average the salary of a labour is 1600 rupees of describe rupees 8000 the average salary of employee in the factory is.......
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f1=60 f2=30 f3=10 x1=1600 x2 =3000 x3=8000
formula =x1f1+x2f2+x3f3/f1+f2+f3
1600×60+3000×30+8000×10/60+30+10
=266000/100
=2660
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