A student got 33.33% marks in an exam and failed by 20 marks. If he had got 50%, he would have passed by 10 marks. Find total marks.
Show answer & explanation
Correct answer: A
Explanation
Let the total marks be x.
Passing marks = x/3 + 20
Passing marks = x/2 − 10
x/3 + 20 = x/2 − 10
x/2 − x/3 = 20 + 10
(3x − 2x)/6 = 30
x/6 = 30
x = 180