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On a test consisting of 80 questions, Nasir answered 75% of the first 60 questions correctly. What percent of the other 20 questions does he need to answer correctly for his grade on entire examination to be 80%?

On a test consisting of 80 questions, Nasir answered 75% of the first 60 questions correctly. What percent of the other 20 questions does he need to answer correctly for his grade on entire examination to be 80%? Correct Answer 95%

Total Question = 80 Question need to answer for his grade = (80*80/100 = 64number of questions answered among first 60 questions = (60*75)/100 = 45Among last 20 question, he has to be answered = 64-45 = 19 So, percentage = 1920×100 = 95% (Ans)

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