OG详解-OG6 数学2 Q7

The correct answer is 10. It’s given that the amount of Hanna’s food order was $50 and that Hanna gave a tip of 20% of the amount of the bill. 20% of 50 can be calculated as(20100​​) (50), which yields 1000​100​, or 10. Therefore, the amount, in dollars, of the tip Hanna gave is 10.