7/8 = 0.875 (87.5%)

       What is 11% of 49 ? =>  49 x .11 = 5.39

        5% of what is 29 ? => .05 /  20 = 400

        3 is 16% of what ? => .16 /  3  = 18.75

10 is what percent of 20 ? =>  20 /  10 = .5 (50)

What percent of 50 is 16 ? =>  50 /  16 = .32 (32%)