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182 12: The Equation Solver
File name : English-M02-1-040308(Print).doc Print data : 2004/3/9
Profit ＝ (Price × Quantity) － (Variable costs × Quantity)
－ Fixed Costs
The C-Sharp Piano Corporation sells pianos for $6,000. Variable costs
are $4,100; fixed costs per year are $112,000. How many pianos
must C-Sharp sell this year in order to earn a profit of $130,000? (In
past years, C-Sharp has had to sell between 100 and 200 pianos to
make an acceptable profit. You can use this information as initial
guesses.)
Press , then enter the equation:
Keys: Display: Description:
I
Stores, verifies, and
creates labels for the
equation.
6000 Stores price.
4100
112000
130000
Stores variable cost,
fixed cost, and profit.
The following steps enter guesses for
QTY. If the Solver must search
iteratively to solve for
QTY, it will begin by using the estimates 100 and
200.
Keys: Display: Description:
100
The first guess for
QTY.
200
The second guess for
QTY.