【单选题】If the number of employed persons in a country equals 24 million, the number of unemployed persons equals 8 million, and the number of persons over age 16 in the population equals 40 million, the unem...
【单选题】In a crate of fruit that contained strawberries, blueberries, and raspberries, the ratio of the number of pints of strawberries to the number of pints of blueberries to the number of pints of raspberr...