1 EASY If the ratio of boys to girls is 16:1 in Ryan's class, and there are 16 boys, how many girls are in the class?

 2 EASY There are 5 red marbles and 7 blue marbles in a bag. What is the ratio of red marbles to blue marbles?

 3 EASY Ben took a Math contest and got 10 correct and 35 incorrect answers. What was the percentage of correct answers? (Round to the nearest percent.) 29%22%5%40%10%

 4 MEDIUM In an ice cream preference survey, it was shown that 32 students preferred chocolate, 23 preferred vanilla, and 53 preferred the Alex Special Blend$$^{TM}$$. What percentage of students did not like chocolate? 70%79%30%25%83%

 5 MEDIUM Yves and Julia have 12 children. If 3 of them are girls, what percent of them are boys? 70%30%25%75%80%

 6 MEDIUM If there are 10 multiple choice questions and 4 short answer questions on a test, what is the ratio of short answer questions to multiple choice questions, in simplest form?

 7 MEDIUM On Mr.L's tests, the ratio of bonus questions to regular questions is 2:5. If there are 6 bonus questions, how many regular questions are there?

 8 HARD In a class, 20 students are girls, composing 40% of the class. What is the total number of students in the class? 2030506070

 9 HARD In Mr.G's class, the ratio of boys to girls is 4:5. If 25% of the boys leave the class, what is the new ratio of boys to girls?

 10 HARD Ben answered 64 problems correctly on his history exam and received a grade 75%. How many problems were on the exam, if all the problems were worth the same number of points? (Round to the nearest whole number) 48100908085