Question

Sam had 18 problems wrong on his test. His score was 64% correct. How many problems were on the test?

Answer 1

100-64=36 percent wrong

if 36% is 18 questions

then, 36/18=2

every question is 2% grade

100/2= 50 questions in total

Answer 2

100-64=36 percent wrong
if 36% is 18 questions
then, 36/18=2
every question is 2% grade
100/2=50 questions in total