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A puzzle expert wrote a new sudoku puzzle book. His initial costs are $325.binding and packaging each book costs sixty cents.The Price of the book is one dollar and ninety cents. How many books must be sold to break even enter?an integer

User MattYao
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1 Answer

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First, we set the equations that model the situation:

Let x be the number of books sold and produced.


T_1=325+0.60x

is the cost of producing.


T_2=1.90x

is the revenue.

To break even enter, the above equations must satisfy the following condition:


325+0.60x=1.90x\text{.}

Solving the equation for x, we get:


\begin{gathered} 325=1.90x-0.60x=1.30x, \\ x=(325)/(1.30)=250. \end{gathered}

Answer:


250.

User Kavin
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