Question
The mass of 3 bags of red bean and a packet of corn starch is 11 kg. The mass of each bag of red bean is 3 kg. The mass of a packet of corn starch is         .
4 m

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The mass of 3 bags of red bean and a packet of corn starch is 11 kg. The mass of each bag of red bean is 3 kg. The mass of a packet of corn starch is         .