The answers are:
3:d
4:c
5:b
6:c Note: I am not 100% sure.
Let the number of comic books be X
if we add 14 to X = 24
so we will find the value of X to get half initial number of comic books William had.
14+X=24
X=24-14
X=10
so the total innitial number of comic books William had is 10+10=20 books.
I think it is because they are both different differences
As a decimal .375 as a percentage it would be 37.5