SOLUTION: A storeowner buys a quantity of tennis ball for $600. If they had each cost $0.25 less, she would have had 10 more for the same money. How much did she pay for each ball? Thanks

Question 536713: A storeowner buys a quantity of tennis ball for $600. If they had each cost $0.25 less, she would have had 10 more for the same money. How much did she pay for each ball?
Thanks:)
Answer by josmiceli(19441) (Show Source): You can put this solution on YOUR website!
Let = the number of tennis balls she bought
Her cost/ball is
The cost/ball minus 25 cents is
given:
( cost/ball ) x ( number of balls ) = cost

-----------------------------

Subtract from both sides

Multiply both sides by

Use quadratic formula

( use the (-) square root )

She paid $600 for 150 balls, so she paid

$4 for each ball
check answer:

OK
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