On a 50-question test, a student answered 5 questions incorrectly. What percent did the student answer correctly? A. 55% B. 45% C. 10% D. 90%

To solve,

find the number of question that the student answered correctly

That is 50-45

all 50 question of the test represented 100%

what about 45 question that were answered by the student correctly

by cross multiplication

45 x100/50 = 90% (D)

Total number of questions = 50

Number of questions answered incorrectly = 5

Therefore,

Number of questions answered correctly = 50-5 = 45 questions

Now, to get the percentage of correct answers, we will divide the number of correct answers by the total number of questions and then multiply the quotient by 100 as follows:

% of correct answers = (45/50) * 100 = 90%

Comparing the calculated value to the choices we have, we will find that the correct choice is:

D. 90%