Question

Colin got 16 out of 80 correct in his test.

What fraction of the marks did he get wrong?
Give your answer in its simplest form.

Answer 1

4/5

Explanation:

substract the number of questions he got correctly from the total number of the questions to yield 80-16=64

then set the fraction as number of incorrect questions as the numerator and the total number of questions as the denominator

64/60=4/5

Answer 2

Answer:4/5

Explanation:

=80 out of 80 - 16 out of 80

=64 out of 80