Perhitungan Harga yang Harus Dibayar oleh Yanti di Toko SERBA ADA

Yanti, along with her friends Wati and Rina, recently went to a store called SERBA ADA to buy some books and pencils. Each of them had different items they wanted to purchase, and they were curious to know how much Yanti would have to pay for her chosen items. Let's dive into the details and calculate the total amount Yanti needs to pay. Wati bought 4 books and 3 pencils, and the total cost of her purchase was Rp 51,000. Rina, on the other hand, bought 1 book and 4 pencils, and her total bill came to Rp 29,000. Now, let's find out how much Yanti needs to pay for her desired items. Yanti wanted to buy 3 books and 2 pencils. To calculate the total cost, we can use the information from Wati and Rina's purchases. By comparing the prices of books and pencils, we can determine the individual prices of each item. From Wati's purchase, we can deduce that the cost of 1 book is Rp 51,000 / 4 = Rp 12,750. Similarly, the cost of 1 pencil can be calculated as Rp 51,000 / 3 = Rp 17,000. From Rina's purchase, we can deduce that the cost of 1 book is Rp 29,000 / 1 = Rp 29,000. The cost of 1 pencil can be calculated as Rp 29,000 / 4 = Rp 7,250. Now that we have the individual prices, we can calculate the total cost for Yanti's desired items. Yanti wants to buy 3 books, so the total cost for the books would be 3 x Rp 12,750 = Rp 38,250. Additionally, Yanti wants to buy 2 pencils, so the total cost for the pencils would be 2 x Rp 17,000 = Rp 34,000. Therefore, the total amount Yanti needs to pay for her desired items at SERBA ADA is Rp 38,250 + Rp 34,000 = Rp 72,250. In conclusion, based on the prices of books and pencils from Wati and Rina's purchases, Yanti would have to pay Rp 72,250 for 3 books and 2 pencils at the SERBA ADA store.