Workers work for 7 days for you, returned to a gold bar (since it is a gold bar, you should not be bent it?), You must pay them a paragraph every day, and can only take it twice, how will you pay? (The answer is below: But the font color is white, you need to choose to see the gold bars in 1/7 and 3/7 first divided into 1/7, 2/7, 4/7 three, first day pay Give 1/7, pay back the next day and pay 2/7, and so on.