Question

a girl is 13 years old and 135 cms tall. at the end of the growth period how much tall will she be?

Answer 1

age in years-13
% of full height at 13 years-95
at the end of the growth period her height -present height(cm)/% of full height at that age multiply 100
                    i.e 135/95 multiply with 100
                       =142.1cm.