Real life Math: planning a winter vacation

Chaewon’s family wants to stay in Vienna, Budapest, and Zalzburg for their winter vacation. They will spend 3 days in Vienna, 2 days in Budapest, and 2 days in Zalzburg, with a flight back to Athens. How many days in total will they spend in their vacation including the flight?
By Chaewon

What do you think the answer is? How can you prove it?

3 thoughts on “Real life Math: planning a winter vacation

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