In a competition, the ratio of selected to unselected candidates was 5 : 2. If 100 more candidates had applied and 20 fewer were selected, the ratio would have been 3 : 2. How many candidates originally applied?
In a competitive exam, the ratio of successful to unsuccessful candidates is 5:2. Had the number of unsuccessful candidates been 14 more, the ratio would have been 4:3. How many candidates appeared for the exam?
In a competitive exam, 70% of the candidates passed in English and 80% passed in Mathematics. If 10% failed in both subjects, what is the pass percentage in both subjects?