Soal SMA · Soal cerita · Kesulitan 2/5
A school is ordering two types of English workbooks. Workbook A costs Rp50,000 and Workbook B costs Rp75,000. The school orders 200 books in total and spends Rp12,500,000. How many copies of Workbook B were ordered?
- A.50 copies
- B.75 copies
- C.100 copies
- D.125 copies
Kunci jawaban & pembahasan
Jawaban: 100 copies
Let b be the number of Workbook B and a the number of Workbook A. From a + b = 200 and 50,000a + 75,000b = 12,500,000, substituting a = 200 - b gives 10,000,000 + 25,000b = 12,500,000, so b = 100.
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