Question
The mass of a box and one packet of onions is 1300 g. The mass of the same box and 3 similar packets of onions is 2140 g. What is the mass of a packet of onions?
4 m

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The mass of a box and one packet of onions is 1300 g. The mass of the same box and 3 similar packets of onions is 2140 g. What is the mass of a packet of onions?