Question
A box which contains 8 similar packets of brown rice and 5 similar packets of black beans has a mass of 3 kg 990 g. The box alone is 420 g. Each packet of brown rice has a mass of 240 g. Find the mass of each packet of black beans in kg.
3 m

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A box which contains 8 similar packets of brown rice and 5 similar packets of black beans has a mass of 3 kg 990 g. The box alone is 420 g. Each packet of brown rice has a mass of 240 g. Find the mass of each packet of black beans in kg.