400
Juan, Cesar, Allen, Chris, and Sam all took a quiz in different classes. Juan scored 8/10, Cesar scored 24/30, Allen got 4 out of 5, Chris received a 10/12, and Sam missed 20 questions out of 100. Which of the students' scores are equivalent fractions? Justify.
Juan 8/10, Cesar 24/30, and Allen 4/5
All can reduce to 4/5.