Answer:
Susan has more books than Michael.
Susan has 25% more books than Michael.
Step-by-step explanation:
Number of books Michael has = 40.
Number of books Susan has = 40+50%(40)=40+20=60.
When Michael buys 8 more books number of books Michael has = 40+8=48.
Michael has less number of books than Susan.
Michael has 60-48=12 more books than Susan.
Percent of books Susan has less than Michael = [tex]\frac{12}{48}.100=25%[/tex]%.