Question

A student who secures 20% marks in an examination fails by 30 marks. Another student who secures 32% marks gets 42 marks more than those required to pass. The percentage of marks required to pass is :

Answer 1

How this is possible
Another student secures more marks then first student but Another student need more marks to pass then first student

Answer 2

Answer:

25%

Step-by-step explanation:

Given 20% of x fails by 30 and 32% of x get 42 marks more

=>20x/100 +30 = 32x/100 -42

=> x/5 + 30 =16x/50 -42

=>10x+1500=16x-2100

=>6x=3600

=>x=3600/6

=>x=600

which is the total mark

substitute it in the above equation

(20 *600)/100 + 30

=>120+30

=>150

To calculate the percentage

150/600 *100

=>25%