Find the unknown entries a,b,c,d,e and f in the following distribution of heights of students in a class



On comparing last two tables, we get


a = 12


12 + b = 25


b = 25 - 12 = 13


22 + b = c


c = 22 + 13 = 35


22 + b + d = 43


22 + 13 + d = 43


d = 43 - 35 = 8


and 22 + b + d + e = 48


22 + 13 + 8 + e = 48


e = 48 - 43 = 5


and 24 + b + d + e = f


24 + 13 + 8 + 5 = f


f = 50


12
1