On a test consisting of 250 questions, Jassi answered 40% of the first 125 questions correctly. What percent of the other 125 questions does she need to answer correctly for her grade on the entire exam to be 60%?
Question
On a test consisting of 250 questions, Jassi answered 40% of the first 125 questions correctly. What percent of the other 125 questions does she need to answer correctly for her grade on the entire exam to be 60%?
Total correct questions for getting 60% grade = 250 × (60/100) = 150
40% of 125 = 50 questions
Therefore X% of 125 = 150-50 = 100 questions
=> X = (100×100)/125 = 80
Required percentage = 80%
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