HP 17bll+ User Manual page 182

Profit ＝ (Price × Quantity) － (Variable costs × Quantity)
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
                                    
Keys:

I
6000 

4100


112000


130000

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:
100


200


182 12: The Equation Solver
－ Fixed Costs
, then enter the equation:
Display:





Display:


Description:
Stores, verifies, and
creates labels for the
equation.
Stores price.
Stores variable cost,
fixed cost, and profit.
Description:
The first guess for QTY .
The second guess for
QTY .