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Karena jawaban yang paling mendekati
21). Diket : penjualan pulpen = 25 lusin
-penggaris : 20%
-buku tulis : 40%
- pensil : 15&
Tanya : banyak penjualan pensil
Jawab :
Misal = jika persentase pensil+buku tulis+penggaris = 75%
Pulpen?
100% - 75% = 25%
y × 25%/100 = 25
y = 100
Jadi penjualan pensilnya
y × 15%/100
= 100 × 15%/100
= 15 lusin
Maaf kalo salah