Nancy correctly answered 22 questions. These correct answers gave him a percent score of 55%. In total, how many questions were on this Biology test?

Answer 1

N is the # of questions on the Biology exam, assuming they are all the same percentage.

Then 55% of N = 22

(55/100) * N = 22

N = 22*100/55 = 22*20/11 = 2*20 = 40

CHECK: 22/40 = 11/20 = 55%

THere are 40 questions on this biology test