Mathematics, 01.07.2019 02:20, kaylinreed7

Aballoon pump and 3 packs of balloons cost £9 altogether. a balloon pump and 4 packs of balloons cost £11 altogether. how much dose a balloon pump anf 8 packs of balloons cost?

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Aballoon pump and 3 packs of balloons cost £9 altogether. a balloon pump and 4 packs of balloons cos...