Bissoy.com
Doctors Medicines MCQs Q&A

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?

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? Correct Answer 85

Let remaining question right be x, then

According to the question

60 × (65/100) + x = 120 × 75/100

39 + x = 90

x = 90 - 39 = 51

Required percentage = 51/60 × 100 = 85%

SHORT TRICK:

Using average method

(65 + y)/2 = 75

65 + y = 75 × 2

y = 150 - 65 = 85%

Related Questions

To pass a test, a candidate needs to answer at least 2 out of 3 questions correctly. A total of 6,30,000 candidates appeared for the test. Question A was correctly answered by 3,30,000 candidates. Question B was answered correctly by 2,50,000 candidates. Question C was answered correctly by 2,60,000 candidates. Both questions A and B were answered correctly by 1,00,000 candidates. Both questions B and C were answered correctly by 90,000 candidates. Both questions A and C were answered correctly by 80,000 candidates. If the number of students answering all questions correctly is the same as the number answering none, how many candidates failed to clear the test?
In an examination, a student can choose the order in which two questions (QuesA and QuesB) must be attempted. - If the first question is answered wrong, the student gets zero marks. - If the first question is answered correctly and the second question is not answered correctly, the student gets the marks only for the first question. - If both the questions are answered correctly, the student gets the sum of the marks of the two questions. The following table shows the probability of correctly answering a question and the marks of the question respectively.  question Probability of answering correctly marks QuesA 0.8 10 QuesB 0.5 20 Assuming that the student always wants to maximize her expected marks in the examination, in which order should she attempt the questions and what is the expected marks for that order (assume that the questions are independent)? 
If 75% students of a class answered the first question in a test correctly, 55% answered the second question correctly and 20% answered neither of the questions correctly, what percent answered both the questions correctly?
If 75 percent of a class answered the first question on a certain test correctly, 55 percent answered the second question on the test correctly, and 20 percent answered neither of the questions correctly, what percent answered both correctly?
In a test consisting of 200 questions, Amit answered 40% of the first 120 questions correctly. What percent of the 80 remaining questions does he need to answer correctly for his score in the entire test to be 60%?
In a test consisting of 150 questions, Neha answered 40% of the first 90 questions correctly. What percent of the 60 questions does she need to answer correctly for her score in the entire test to be 60%?
Sunita appeared for a test consisting of 260 questions and answered 40% of the first 130 questions correctly. What percentage of the rest 130 questions must she answer correctly so as to score 60% in the entire test?
In a test consisting of 150 questions, a candidate correctly answered 80% of the first 100 questions, what percentage of the remaining questions do the candidates need to correctly answer 60% overall in the test?
Read answered 75% of the questions on a test correctly. If he answered 18 questions out of the first 22 correctly, and two-third of the remaining questions correctly, how many questions were on the test?
In a test consisting of 120 questions, a candidate correctly answers 60% of the first 90 questions. What percentage of the remaining questions does he need to answer correctly so that his answers to 55% of the total questions in the test are correct?