On a certain test,if a student answers 80-90 percent of the questions correctly, he will receive a letter grade of B. if there was 40 questions on the test, what is the minimum number of questions the student can answer correctly receive a grade of b?

Question

anonymous · Answer

(n/40) * 100 = 80

anonymous · Answer

The lower bound for a B is 80%. So we need to work out what 80% of 40 is.
40x80%=your answer

anonymous · Answer

why cant you use 90?

anonymous · Answer

Because it's asking for a MINIMUM number of questions

anonymous · Answer

yeah it's asking for the minimum

anonymous · Answer

ohhhhh i see thank you