Question 4: Lukas has a visa lasting 30 days. He can get an extension to his visa, but only for 14 days. If approved, the 14 days begin on the day the extension was applied for. The visa extension takes five working days to process.

How many days can Lukas stay in China if he receives one visa extension? For extra credit, how does the answer change if there is a weekend during the last five days of his original visa?

Update:I can fly from Beijing to Berlin for $578. Tempting.