Question

The marks scored by a boy in three subjects are in the ratio 3 : 4 : 8. Boy scored an overall aggregate of 60% in the exam. If the maximum marks in each subject are the same, in how many subjects did boy score more than 75% marks?

Q: Answer-The marks scored by a boy in three subjects are in the ratio 3 : 4 : 8. Boy scored an overall aggreg...

Let the maximum marks in each subject be 100. Total score 60 of 100 100 100 60 of 300 180 Also, 75 marks in a subject correspond to 75 of 100 75 Let a boy have scored 3x, 4x and 8x in the three subjects. 3x 4x 8x 180 15x 180 i.e. x 12 Hence, his marks in the three subjects are 36, 48 and 96. Hence, he has scored more than 75 in exactly one subject.