The average annual income (in Rs.) of certain agricultural workers is S and that

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The average annual income (in Rs.) of certain agricultural workers is S and that of other workers is T. The number of agricultural workers is 11 times that of other workers. Then the average monthly income (in Rs.) of all the workers is-

Options:

A . $$\frac{S + T}{2}$$

B . $$\frac{S + 11T}{2}$$

C . $$\frac{1}{{11S}} + 1$$

D . $$\frac{11S + T}{12}$$

Answer: Option D

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