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.
Indian agriculture has been the source of supply of raw material to leading industries. Which of the following industry is directly depend on agricultur...
Enzyme involved in conversion of sucrose into glucose and fructose is
Fluchloralin & Trichloralin are examples of:
What is the coverage of Pradhan Mantra Awas Yojna ?
Which of the following is responsible for the implementation of FSSAI?
Agriculture in India dates back to:
Which crop involves the practice of nipping, which entails the removal of the apical bud of young plants, typically done when the plants are 2 to 4 week...
A substance needed by the body for growth, energy, repair and maintenance is called a____
The grassy stunt disease of paddy caused by virus is spread by ______
A series of still pictures on one roll is called:
Relevant for Exams:
