(i) We will take the scale as 1 unit = 10 children.
(ii) (a) Fifth class has the maximum number of children i.e., 135.
(b) Tenth class has the minimum number of children i.e., 80.
(c) Number of children in class eight = 100 Therefore Ratio of class sixth to the students of class eighth
120/100= 6/5= 6:5