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Question 313599: All of the customers at a fruit store purchased some apples or some bananas. If 75% of the customers purchased apples and 40% of them purchased bananas, while 9 customers bought both, how many customers did the store have?
Answer by stanbon(75887)   (Show Source):
You can put this solution on YOUR website! All of the customers at a fruit store purchased some apples or some bananas. If 75% of the customers purchased apples and 40% of them purchased bananas, while 9 customers bought both, how many customers did the store have?
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Let # of customers be "x".
0.75x + 0.40x - 9 = x
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Multiply thru by 100 and solve for "x":
75x + 40x - 900 = 100x
15x = 900
x = 60
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Cheers,
Stan H.
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