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Polly's Party

Solution

• 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

Explanation

• 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.