An analysis of monthly wages paid to the workers in two firms A and B belonging to the same industry gives the following result:

Firm A: Number of workers = 500, Average monthly wage = ₹1860, Variance of distribution of wages = 81
Firm B: Number of workers = 600, Average monthly wage = ₹1750, Variance of distribution of wages = 100

The average of monthly wage and variance of distribution of wages of all the workers in the firms A and B taken together are

Mathematics 2018 NDA Mathematics 2018 NDA 2018

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