A student attempts x number of questions. He answers 15 correctly out of first 20 questions and of the remaining questions, he answers 1/3 correctly. If all questions have same credit and the student gets 50 % marks, then find the value of x. A. 30 B. 40 C. 45 D. 50 Answer Workspace Report Discuss Answer with explanation Answer: Option D Explanation Step-by-step explanation: 15+1/3(n-20)=50% of n 15+n/3-20/3=50/100*n 15-20/3=n/2-n/3 25/3=3n-3n÷6 25/3=n/6 n=50 Workspace
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