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social arithmetic

1. SOCIAL
ARITHMETIC
Presented By : Nahdah Rafika

2. ABSTRACT 1

3. GLOSSARY
2
cost, buying price = harga pembelian
selling price = harga penjualan
profit = untung
loss = rugi
marked price, original price = harga kotor
discount = potongan harga
sale price = harga bersih setelah diskon
bruto
netto
tarra

4. SOCIAL ARITHMETIC
3
Social arithmetic can be defined as a
branch of mathematics that deals with
various economic transactions or events in
daily life, which are solved using arithmetic
applications.

5. SOCIAL ARITMETIC
4
Profit and Loss
Percentage Profit and Loss
Discount
Tax
Bruto, Netto, and Tarra

6. 5
PROFIT AND LOSS
Profit1.
If selling price > buying price
Profit = Selling price - buying price
2. Loss
If buying price > selling price
Loss = buying price - selling price

7. EXAMPLE
Sarah runs a small bakery. She sells each loaf of bread for Rp 15.000. The cost
to make each loaf is Rp 10.000. If Sarah sells 150 loaves of bread in a week, what
is her total profit for that week?
6
selling price = 15.000 x 150 = 2.250.000
buying price = 10.000 x 150 = 1.500.00
PROFIT = 2.250.000 - 1.500.00
=750.000

8. EXAMPLE
Daniel bought 100 smartphones at a wholesale price of Rp 3.000.000 each.
Due to a market drop, he had to sell each smartphone at Rp 2.800.000.
Calculate Daniel's total loss from selling these smartphones
7
Buying price = 3.000.000 x 100 = 300.000.000
Selling Price = 2.800.000 x 100 = 280.000.000
LOSS = 300.000.000 - 280.000.000
= 20.000.000

9. 8
PERCENTAGE PROFIT & LOSS
The percentage profit =
The percentage loss =

10. 9
EXAMPLE
selling price = 15.000 x 150 = 2.250.000
buying price = 10.000 x 150 = 1.500.000
PROFIT = 2.250.000 - 1.500.000
= 750.000
Buying price = 3.000.000 x 100 = 300.000.000
Selling Price = 2.500.000 x 100 = 280.000.000
LOSS = 300.000.000 - 280.000.000
= 20.000.000
% PROFIT =
= 50%
% LOSS =
= 6,6%

11. DISCOUNT 10
Discount is the difference between the regular price and the sale price of an
item. you can use percent of decrease to find discounts.
Discount = Original price x discount percentage
For example, if an item originally costs Rp 100.000 and there is a 20% discount,
the calculations would be:
Discount = 100.000 x 20% = 20.000
Sale price = Original Price - discount
Sale price = 100.000 - 20.000 = 80.000

12. TAX
Tax = Total price x tax%
11
Tax is a charge usually of money imposed by authority on persons or property for
public purposes
Tax Restaurant(PPN)1.
Income Tax (PPh)1. Tax = Gross Income x tax%

13. 12
example : A restaurant charges a 10% tax on food purchases. If someone orders
food worth Rp 150,000, how much will they have to pay including the tax?
Tax = 150.000 x 10% = 15.000
Total = 150.000 + 15.000 = 165.000
So, the total amount to pay, including the 10% food tax, is Rp 165,000.

14. 13
Bruto : the total weight ( the content and the package)
Bruto = Netto + Tara
Netto : the net weight ( only the content )
Netto = Bruto - Tara
Tarra : the weight of package
Tara = Bruto - Netto
GROSS, NET, AND TARE

15. EXAMPLE
14
A company packages flour in large sacks for distribution. The gross
weight of a filled sack is 25 kg, which includes the weight of the sack
itself. The tare weight of the sack is 2 kg. Calculate the net weight of the
flour inside the sack.
Gross weight = 25 kg
Tare weight = 2 kg
Net weight = Bruto - Tara
Net = 25 - 2 = 23 kg

16. THANK YOU