the average of 30 results is 20 and the average of other 20 results is 30 . wh

Question

the average of 30 results is 20 and the average of other 20 results is 30 . what is the average of all the results?

Options:

A . 700

B . 800

C . 1200

D . 1300

Answer: Option C
Explanation :

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