Question
A candidate just passed by getting 60 answers correct by
attempting 132 of the total questions. Find the total number of questions in the examination if a candidate needs 40% marks. (All questions carry equal marks)Solution
Let the total number of questions be x. then, Percentage need in exam = 40% Correct answer = 60 percentage = (correct answer)/(total questions) x 100 40 = (60/x) x 100 x = 150 Alternate method Given that 60 ≡ 40% 1 ≡ 
% 150 ≡ 100% Therefore, Total number of questions = 150
Find the approximate value of (81.5)1/4
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