A mahsulotning 1 donasi 15$, B mahsulotning bir donasi 18$ dan sotilyapti. Agar ular hammasi bo'lib 20 ta olingan bo'lib A ning soni B ning sonidan 4 marta kam bo'lsa, B uchun necha $ to'langan?

  1. 288$
  2. 60$
  3. 348$
  4. 228$

📝 Detailed explanation

A + B = 20 va B = 4A. O'rniga qo'ysak: 5A = 20 ⇒ A = 4. Demak, B = 16. B uchun: 16 · 18 = 288$.
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