Question
'G', 'H', and 'I' appeared in an exam. 'G' scored 65%
marks in an exam which was 60 more than passing marks. Whereas 'H' scored 45% marks in the exam which was 20 marks less than the passing marks. If 'I' scored 80% marks in the exam, then find the difference between marks scored by 'G' and 'I' in the exam.Solution
ATQ, Let the total marks be 'Z'. So, (65% of Z) - 60 = (45% of Z) + 20 Or, 0.65Z - 60 = 0.45Z + 20 Or, 0.2Z = 80 So, Z = 400 Required difference = (0.8 - 0.65) × 400 = 60
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