Page 15 - PRACTICUM 5 FLIP PDF_EVELYN ANGELIKA

Let's look at the following example questions so that your understanding is better:

There are four shops selling the same type of goods. List of goods prices and discounts as in the
table.

Discount

Price Toko Toko Toko Toko
Item
Rame Damai Seneng Indah

Shirt IDR 80.000,00 25% 20% 15% 10%
Pants IDR 100.000,00 10% 15% 20% 25%

Kai will buy a shirt and pants at the same shop. In which store did Ali shop for the cheapest price?

a. Toko Rame

Discount of the shirt = 25 × IDR 80.000,00 = IDR 20.000,00
100
Discount of the pants = 10 × IDR 100.000,00 = IDR 10.000,00
100
Total discount of Toko Rame = IDR 20.000,00 + IDR 10.000,00 = IDR 30.000,00

b. Toko Damai

Discount of the shirt = 20 × IDR 80.000,00 = IDR 16.000,00
100
Discount of the pants = 15 × IDR 100.000,00 = IDR 15.000,00
100
Total discount of Toko Damai = IDR 16.000,00 + IDR 15.000,00 = IDR 31.000,00

c. Toko Seneng

Discount of the shirt = 15 × IDR 80.000,00 = IDR 12.000,00
100
Discount of the pants = 20 × IDR 100.000,00 = IDR 20.000,00
100
Total discount of Toko Seneng = IDR 12.000,00 + IDR 20.000,00 = IDR 32.000,00

Social Arithmetic E-module – For Grade VII