Question 762254
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If 80 students average 80, then the total score for the 80 students is 80 times 80 or 6400.  If you take away 30 students and the average is now 85, the total scored by 50 students is 50 times 85 or 4250.  6400 minus 4250 leaves 2150 points to be scored by the 30 students that were removed.  So, what is the average for the 30 if their total is 2150?


John
*[tex \LARGE e^{i\pi}\ +\ 1\ =\ 0]
<font face="Math1" size="+2">Egw to Beta kai to Sigma</font>
My calculator said it, I believe it, that settles it
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