The average of 40 results is 30 and the average of other 30 results is 40 . what is the average of all the results?  Choose one
A) 34  B) 25  C) 48  D) 50  E) None
Answer   Sum of 70 result = sum of 40 result + sum of 30 result.   = 40 x 30 + 30 x 40   = 2400/70   Correct Option: 34
<result>A</result>
The average of 40 results is 30 and the average of other 30 results is 40 . what is the average of all the results?