Question

A student has to secure 30% marks to pass He got 30 marks and failed by 30 marks The maximum number of marks is__

• A. 300
• B. 200
• C. 400
• D. 100

Answer 1

The correct option is B 200

Let the maximum marks be $M$
So, to pass, the student has to score atleast $30$ % of the marks $=\frac{30M}{100}$
As the student scores $30$ marks and failed by $30$ marks, we have
$30=\frac{30M}{100}-30$
$=>60=\frac{30M}{100}$
$=>M=200$