9 divided by 20 is actually equal to 0.45, perhaps someone forgot the decimal place.
33.2222
9
45 of them because 45 times 20 = 900
45
7.5
8
45 / 20 is equal to 2.25 or 2 1/4
33.2222
45
0.0222
0.8
Answer: 45% Work: 20 is decreased to 11 9 = D x 20 --- ---- 20 20 20 divided by 9 = .45 .45 as a percent = 45 %