LEXIBOOK PLC259 Instruction Manual page 7

Cost, Sell and
Margin Calculation:
PROFIT TAX
Determine the Cost:
If the selling price of an item is
$36.55 and the margin is 20%,
find the cost of the item?
3 6 .
5 5
SELL 2
0 MGN
COST 29.24
Rounding Selector:
UP: Rounds up the decimal to the specified * number of places.
5/4: Rounds off the decimal to the specified * number of places.
CUT: Cuts off the decimal to the specified * number of places.
* Use the decimal place selector to specify the number of decimal places.
F 3 2 0 ADD2
Decimal Place Selector:
F: Floating decimal point system, which displays the value without rounding.
3, 2, 0: Number of decimal places for the UP, 5/4 and CUT setting of the Rounding Selector.
ADD2: The "Add Mode" automatically adds a decimal point and two decimal places to all values, even if you don't
input a decimal point. This mode is very useful when performing calculations in dollars or other monetary
systems that require two decimal places. Two decimal places are not added in this mode if you press the •
key while inputting a value, or for any operation other than addition and subtraction.
Power source:
1 x AG10 (1.5V ) battery and solar cell.
To replace the battery, use a screwdriver to open the battery compartment (located at the back of the
unit) and remove the battery.
Insert a new battery (+ side facing up) and close back the battery compartment.
Non-rechargeable batteries are not to be recharged. Rechargeable batteries are to be removed from the product
before being charged. Rechargeable batteries are only to be charged under adult supervision. Different types
of batteries or new and used batteries are not to be mixed. Only batteries of the same or equivalent type as
recommended are to be used. Batteries are to be inserted with the correct polarity. Exhausted batteries are to be
removed from the product. The supply terminals are not to be short-circuited. Do not throw batteries into a fire.
Remove the batteries if you are not going to use the product for a long period of time. Battery shall not be exposed
to excessive heat such as sunshine, fire or the like.
Automatic switch off:
If no key is pressed, the calculator will switch itself off automatically after a few minutes.
Determine the
Selling Price
If the cost of an item is
$180 and the margin is
25%, find the selling price.
1 8 0
COST 2
5 MGN
SELL 240
UP 5/4 CUT
Features
7
Determine the
Margin
If the cost of an item is
$380 and the selling price
is $400, find the margin
percentage.
3 8 0
COST
4 0 0
SELL
MGN% 5