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Find the mean salary of 60 workers of a ...

Find the mean salary of 60 workers of a factory from the following table: `"S a l a r y\ ( i n\ R s )""N u m b e r\ o f\ w o r k e r s"3000 16 4000 12 5000 10 6000 8 7000 6 8000 4 9000 3 10000 1Tot a l 60`

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