SOLUTION: Nadine paid $4800 to buy a certain number of t-shirts for the math club members. Eight shirts were slightly damaged, so the store owner gave her 8 extra shirts effectively decreas
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Question 712387: Nadine paid $4800 to buy a certain number of t-shirts for the math club members. Eight shirts were slightly damaged, so the store owner gave her 8 extra shirts effectively decreasing the cost per item by $20. How many shirts (including the 8 extra) did she buy?
I will appreciate if the step by step solution is posted.
Thank you,
Ariel Halili Answer by josmiceli(19441) (Show Source):
You can put this solution on YOUR website! Let = the number of shirts she bought
The cost per item is
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The owner gave her shirts, so then
she had shirts
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This says:
( cost/shirt with 8 shirts added ) = ( $20 less than original cost/shirt )
Multiply both sides by
Divide both sides by
Use quadratic formula ( discard this result- can't be negative )
She bought 40 + 8 = 48 shirts
check:
OK
