<PRE><B>Question 83718</B>
The average weight for a group of 20 women is 130 pounds.  If the average weight for 3/4 of these women was 140 pounds, what was the average weight, in pounds, for the rest of the women? 
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Total weight of the group divided by # in the group has to be 130 lbs.
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Total weight = (3/4)(20)(140) + (1/4)(20)x
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EQUATION:
(15*140+5x)/20 = 130
2100 + 5x = 2600
5x = 500
x= 100
The average wt. of the remaining (1/4)th of the group is 100 lbs.
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Cheers,
Stan H.</PRE>