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:

52EG;:852;7H ] Y:@/O127EF: ] Y:@/G;X7EF:"

Keys:

 

 

 

 

 

 

Display:

Description:

 

 

 

 

 

Stores, verifies, and

I

E

"

 

 

 

 

 

 

 

 

creates labels for the

 

 

 

 

 

 

 

 

equation.

 

 

 

 

 

6000

*

 

52;7H8'K(((&(("

Stores price.

4100

 

 

 

 

 

 

O127EF:8+K#((&(("

Stores variable cost,

 

O127E"

 

 

112000

 

 

 

 

G;X7EF:8##$K(((&(("

fixed cost, and profit.

G;X7E"

 

 

 

130000

52EG;"

52EG;:8#%(K(((&(("

 

 

 

 

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.

 

Y:@"

Y:@8#((&(("

 

 

200

 

 

Y:@8$((&(("

The second guess for

 

Y:@"

 

 

 

 

QTY.

182 12: The Equation Solver

File name : 17BII-Plus-Manual-E-PRINT-030709

Print data : 2003/7/11