Question
There are 3 boxes.
The total mass of Box A and Box B is 100 kg.
The total mass of Box B and Box C is 100 kg.
The total mass of Box C and Box A is 180 kg.
Find the total mass of Box A, Box B and Box C.
4 m

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There are 3 boxes.
The total mass of Box A and Box B is 100 kg.
The total mass of Box B and Box C is 100 kg.
The total mass of Box C and Box A is 180 kg.
Find the total mass of Box A, Box B and Box C.