Question

12. A student got 40 marks in an examination. He got 50 marks in the next examination. How much
percentage of the marks increased in the second examination when comparing with first examination?
(1 Point)
15%
20%
25%
40%
these are the options​

Answer 1

Let the maximum marks be x.

Then Pass mark for the 1st student =  

100

20

​  

×x+5

Pass mark for the 2nd student =  

100

30

​  

×x−20  

Since pass marks are same for both the students  

100

20x

​  

+5=  

100

30x

​  

−20

⇒  

100

10x

​  

=25⇒x=250  

∴ Pass mark =  

100

20

​  

×250+5=55  

Pass percentage =  

250

55

​  

×100+5=22%

mark me as the brainliest

Answer 2

Answer:

20%

Step-by-step explanation:

20% is the answer

10 marks/ 50 marks × 100 = 20%