SOLUTION: A survey of 900 Amercians found that 680 had confidence in the economy. If 80% of the women and 70% of the men surveyed expressed confidence in the economy, then how many women we

SOLUTION: A survey of 900 Amercians found that 680 had confidence in the economy. If 80% of the women and 70% of the men surveyed expressed confidence in the economy, then how many women we

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Question 436727: A survey of 900 Amercians found that 680 had confidence in the economy. If 80% of the women and 70% of the men surveyed expressed confidence in the economy, then how many women were surveyed?
Answer by jorel1380(3719) (Show Source): You can put this solution on YOUR website!
x+y=900
.80x+.70y=680
8x+7y=6800
7x+7y=6300
x=500
y=400
500 women were surveyed, as were 400 men..
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