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480000 = (6 . 450.000 + 1 . x2)/(6 + 1)
480000 = (2700000 + x2)/7
480000 . 7 = 2700000 + x2
3360000 = 2700000 + x2
x2 = 3360000 - 2700000
x2 = 660000
Jawaban: B
(n1 × x1 + n2 × x2) ÷ (n1 + n2) = ?
Rp. 480.000 = (6 × Rp. 450.000,00 + 1 × x2) ÷ (6 + 1) = ?
Rp. 480.000 = (Rp. 2.700.000,00 + x2) ÷ 7 = ?
Rp. 480.000,00 × 7 = Rp. 2.700.000,00 + x2 = ?
Rp. 3.360.000,00 = Rp. 2.700.000,00 + x2 = ?
Rp. 3.360.000,00 - Rp. 2.700.000,00 = ?
? = Rp. 660.000,00
Rp. 660.000,00 = (B)
Jadi Jawabannya Adalah (B) Rp. 660.000,00