a. There are 23 students in Ms.Bravo's class
b. All you have to do is count the x's.
c. 4 2/4 = 5 students
4 + 5 1/4 = 3 + 2 = 5 students
He is wrong because there are 5 students with hand lengths of 4 2/4 inches AND 4 and 5 1/4 inches.
Therefore, the amount is the SAME
Hope this helps :)