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
Answers
Answered by
0
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
Answered by
1
Answer:
20%
Step-by-step explanation:
20% is the answer
10 marks/ 50 marks × 100 = 20%
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