单选题
Among 23,280 discarded lottery tickets, about 1.8% are found to be worth $1, about 0.02% are found to be worth $2, and all the rest are worthless. Approximately how much are all the lottery tickets worth?
【正确答案】
B
【答案解析】There are approximately 0.018×23,280≈419 tickets worth $1 and approximately 0.0002×23,280≈5 tickets worth $2. The sum value is thus approximately $419+$10=$429, which is closer to $425 than any of the other choices.