
Toni R. answered 04/19/19
Special Needs Tutor Extraordinaire - Energetic and Experienced
1 student.
The question asks "How many MORE STUDENTS..." there are 5 students who are 53" and 4 students who are 55". The height of the students does not matter, it is additional information that is not required to answer the question asked. This question is more about critical thinking and problem solving, than it is about computation.
5 is 1 more than 4, making the answer 1 student.