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720 orang ⇒ x kg beras
300 × x = 720 × 25
300x = 18.000
x = 60 kg
300 orang ⇒ 15 kg gula
720 orang ⇒ x kg gula
300 × x = 720 × 15
300x = 10.800
x = 36 kg
Maka, jika ada 720 orang undangan beras dan gula yang diperlukan adalah 60 kg dan 36 kg
720 = x
(720 x 25) + (720 x 15) = 300.x
18.000 + 10.800 = 300x
60 kg beras + 36 kg gula semoga membantu