Question
In an exam, Rahul scored 50% marks and failed by 75
marks whereas Priya scored 70% marks in the same exam and scored 55 marks more than the passing marks. Find the maximum marks of the exam.Solution
ATQ; Let the maximum marks of the exam be ‘100x’ Marks scored by Rahul = 100x × 0.50 = ‘50x’ Marks scored by Priya = 100x × 0.70 = ‘70x’ According to question: 50x + 75 = 70x – 55 Or, 70x – 50x = 75 + 55 Or, 20x = 130 Or, x = 6.5 Therefore, maximum marks of the exam = 100x = 100 × 6.5 = 650
What is the wavelength of visible spectrum?
Find the equivalent resistance when three resistors of 4 Ω, 6 Ω, and 12 Ω are connected in parallel.
Which of the following does not affect the value of acceleration due to gravity?
In which type of motion does the velocity of a body vary with time?
Half-life of a radioactive substance is 10 days. The time after which only 1/16th of it remains is:
Which law states that “an object remains at rest or in uniform motion unless acted upon by an external force”?
Which of the following is not a nuclear reaction?
Which law explains the relation between pressure and volume of a gas at constant temperature?
What is the minimum escape velocity of rocket to be launched into space?
Which of the following statement is correct?
I. Magnetite is a natural magnet
II. A freely suspended magnet always aligns in N-S direction
Relevant for Exams:
