Question

An engineering student answered 81 questions correctly on a 90-question test. What percent of the

questions did she answer correctly? What percent were incorrect?

Answer 1

To find the percentage of questions the student answered correctly, we can use the formula:

percentage = (part/whole) x 100

where the part is the number of questions answered correctly and the whole is the total number of questions on the test.

So, in this case:

percentage correct = (81/90) x 100

percentage correct = 0.9 x 100

percentage correct = 90%

Therefore, the student answered 90% of the questions correctly.

To find the percentage of questions that were incorrect, we can subtract the percentage of questions answered correctly from 100%:

percentage incorrect = 100% - 90%

percentage incorrect = 10%

Therefore, 10% of the questions were answered incorrectly.

Answer 2

The student answered 81 questions correctly, which is 90% of the questions. The remaining 10% of the questions were incorrect.