SOLUTION: the average of 30 results is 20 & the average of other 20 results is 30. what is the average off all the results ?

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Question 847451: the average of 30 results is 20 & the average of other 20 results is 30. what is the average off all the results ?
Answer by swincher4391(1107) About Me  (Show Source):
You can put this solution on YOUR website!
30 results with an average of 20 = 600 total points
20 results with an average of 30 = 600 total points
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50 results with an average of ? = 1200 total points
1200/50 = 24