Question

mad dan de woning
Q9. Passing marks of an exam is 30% of total marks. if A got 20% of the total marks and failed by 72
marks then find the maximum marks in the examination.
(a) 720
(b) 360
(C) 180
(d) 1440​

Answer 1

nice question ask ur professor

Answer 2

Answer:

Maximum marks = 720

Step-by-step explanation:

Let the total marks be x.

Passing marks = y = 30x/100

A got 72 marks less than y and got 20% of x.

$\frac{y - 72}{x} \times 100 = 20 \\ 100y - 7200 = 20x \\ 100 (\frac{30x}{100}) - 7200 = 20x \\ 30x - 7200 = 20x \\ 10x = 7200 \\ x = \frac{7200}{10} = 720$