Math & Logic · Ages 10–12
Riddle #91
In a class, exactly half the students are girls. If 3 more girls join the class, girls would make up 60% of the class. How many students were originally in the class?
You solved this one before
Answer: 12
Start with 12 students (6 girls). Adding 3 girls makes 9 girls out of 15 students — 60%.