In a test consisting of 120 questions, Anuradha answered 65% of the first 60 questions correctly. What percentage of the remaining questions does she need to answer correctly to score 75% in the test?
Answer & explanation
Correct answer: option 2
Let percentage required be 100x
\(\frac{65}{100}\) × 60 + \(\frac{100x}{100}\) × 60 = \(\frac{75}{100}\)× 120
39 + 60x = 90
60x = 51
100x = 85
Percentage required = 85%