A candidate attempted 12 questions and secured full marks in all of them. if he obtained 60% in the test and all questions carried equal marks, then what is the number of questions in the test? [upsc 2010 (cs-p)]
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let the total no. of questions be x, then 60%x= 12,
.6x=12
x= 20
hence 20 is the answer
.6x=12
x= 20
hence 20 is the answer
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