Use a proportion table to solve. 18 is what percent of 40?

Question

Use a proportion table to solve. 18 is what percent of 40?

Answer 1

18/40 = 18(1/2)/40(1/2) = 9/20 = 9(5)/20(5) - 45/100 = .45 = 45%

18 is 45% of 40

20 is 50% of 40, 20/40 = 1/2

18 is a little smaller percentage

16/40 = 2/5 = 4/10 = 40/100 = 40%

18/40 is midway between 40% and 50% which is 45%