10/40 wrong means 30/40 correct
30/40 = 75% correct
21%
19/20 as a percentage = 100*19/20 = 95%
70% were correctly answered.
75%
78.38%
21%
71% of the questions were answered correctly
19/20 as a percentage = 100*19/20 = 95%
70% were correctly answered.
90%.
90%.
83.33%
92 %
75%
If you answered 27 correctly and 18 incorrectly, you would have answered 60% correctly.
A test score of "90" represents the percentage of correct questions. Multiply this percentage by the total number of questions and you will have the number of questions correctly answered. Subtract this from the total to find answers wrong. 90% of 40 questions = .90 x 40 = 36 questions right. 40-36 = 4 answers wrong.
78.38%