Question

in an examination a student who gets 20% of the maximum marks fails by 5 marks.another students who scores 30% of the maximum marks gets 20 marks more than the pass mark.the necessary percentage required for passing is

Answer 1

10% is 25
100 % is = 25/10 × 100 = 250
30% is = 250×30/100=75

answer 75

Answer 2

Answer:

250

Step-by-step explanation:

Let the maximum marks be x

We are given that 20% of the maximum marks fails by 5 marks.

So, passing marks = 20% of maximum marks +5 = (20% of x)+5

We are also given that another students who scores 30% of the maximum marks gets 20 marks more than the pass mark.

So, Passing marks = 30% of maximum marks -20 =(30% of x )-20

So, $(20\% \times x)+5=(30\% \times x)-20$

$(\frac{20}{100} \times x)+5=(\frac{30}{100}\times x)-20$

$\frac{2x}{10}+5=\frac{3x}{10}-20$

$20+5=\frac{3x}{10}-\frac{2x}{10}$

$25=\frac{x}{10}$

$250=x$

Hence the maximum marks is 250.