Mrs. Rodriquez has 24 students in her class. Ten of the students are boys. Jeff claims that the ratio of boys to girls in this class must be 5:12. What is Jeff’s error and how can he correct it?

There are 24 students total and 10 are boys, so the number of girls is 24 − 10 = 14. The ratio of boys to girls is therefore 10:14, which simplifies to 5:7. Jeff’s error was comparing the number of boys with the total number of students instead of with the number of girls; choice A gives the correct correction.

AI-written and checked against the verified answer.