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If a student scores 25% marks, then he is failed by 210marks. But if he scores 55% marks he is passed with 240marks .Find the passing Percentage? |
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Answer» here is your answer... Given : A student scored 25% marks then he is failed by 210 marks. But he SCORES 55% then he is passed with 240 marks. Let the maximum marks be x According to the question, 25% of x + 210 = 55% of x - 240 => 0.25x + 210 = 0.55x - 240 => 0.25x - 0.55x = - 240 - 210 => - 0.30x = - 450 => x = - 450/- 0.30 = 1500 Find the passing percentage :- Pass marks = 25% of 1500 + 210 = 375 + 210 = 585 Pass percentage = (pass marks × 100)/Maximum marks % = (585 × 100) / 1500 % = 58500/1500 % = 39 % Hence, Passing percentage = 39% thanks |
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