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| Polly's Party |
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- Cupcakes: 3 boxes of 6
- Plates: 2 packs of 10
- Ice-cream sandwiches:
4 boxes of 4
- Juice boxes: 3 packs of 5
TOTAL NUMBER OF BOXES OR PACKS = 12
- Cupcakes:
3 boxes of 6 = 18 cupcakes in all
- Plates:
2 packs of 10 = 20 plates in all
- Ice-cream sandwiches:
4 boxes of 4 = 16 sandwiches in all
- Juice boxes:
3 packs of 5 = 15 boxes in all
They had 12 items, so they could use the express check-out line. They had 15 juice boxes and more of everything else. Therefore, Polly could have 15 people at the party, including herself.
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