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?Solution
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.
How many people sit between Chetan and Yash when counted anticlockwise from Yash?
A, B, C, D, E and F are sitting in a row. E and F are in the centre. A and B are at the ends. C is sitting to the left of A. Who is to the immediate rig...
Who among the following sits second to the right of Y?
What is the position of K with respect to the one whose weight is 51kg, when counted anticlockwise?
Find which one of the given words cannot be made from the letters of the given word.
‘ RESPONSIBLE ’
...Six friends P, Q, R , S, T and U are sitting in a row facing East. 'R' is between 'P' and 'T'. 'Q' is just to the right of 'T' but left of 'S'. 'U' is n...
A, B, C, D and E are sitting on a bench. A is sitting next to B, C is sitting next to D, D is not sitting with E who is on the left end of ...
Which of the following replaces blank ___(1)___?
Who among the following person sits exactly between P and W?
Eight people are sitting around a circular table on a wooden table. R is sitting between M and B. B is sitting third to the right of P. A sits between P...
Relevant for Exams:
