Soal SMA · Soal cerita · Kesulitan 2/5
A school bookstore sells English magazines and newspapers. A magazine costs Rp30,000 and a newspaper costs Rp15,000. On a particular day, the bookstore sold 120 items and earned Rp2,700,000. How many magazines were sold?
- A.50 magazines
- B.60 magazines
- C.70 magazines
- D.80 magazines
Kunci jawaban & pembahasan
Jawaban: 60 magazines
Let m be magazines and n newspapers. From m + n = 120 and 30,000m + 15,000n = 2,700,000, substituting n = 120 - m gives 15,000m + 1,800,000 = 2,700,000, so 15,000m = 900,000 and m = 60.
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