Aptitude - Percentage - Discussion
Discussion Forum : Percentage - General Questions (Q.No. 2)
2.
Two students appeared at an examination. One of them secured 9 marks more than the other and his marks was 56% of the sum of their marks. The marks obtained by them are:
Answer: Option
Explanation:
Let their marks be (x + 9) and x.
| Then, x + 9 = | 56 | (x + 9 + x) |
| 100 |
25(x + 9) = 14(2x + 9)
3x = 99
x = 33
So, their marks are 42 and 33.
Discussion:
173 comments Page 10 of 18.
Suseela said:
1 decade ago
Please, don't confuse with these calculations, my advice is to go by options because, we have two exam marks.
And in question they have asked about the 56% of sum of two exam marks. So go by this way.
Check options:
1. 56/100*69 = 38.
2. 56/100*73 = 40.88.
3. 56/100*75 = 42.
4. 56/100*77 = 43.12.
So the option 3 answer matches with the option 3 in the question. The correct answer is option 3. i.e.. 42, 33.
And in question they have asked about the 56% of sum of two exam marks. So go by this way.
Check options:
1. 56/100*69 = 38.
2. 56/100*73 = 40.88.
3. 56/100*75 = 42.
4. 56/100*77 = 43.12.
So the option 3 answer matches with the option 3 in the question. The correct answer is option 3. i.e.. 42, 33.
Sneha said:
1 decade ago
He got 9 marks.
Kavi said:
1 decade ago
How come x+x+9?
Debasis Biswas said:
1 decade ago
Correct answer is 42, 33.
Chandan pandit said:
1 decade ago
Please clear this.
2ku said:
1 decade ago
Dear @Kavi,
Here we assume that two students mark, one is secured than other in 9 marks.
So let 1st student is x.
2nd student is x+9 [2nd student is secured 9 marks than 1st].
Here we assume that two students mark, one is secured than other in 9 marks.
So let 1st student is x.
2nd student is x+9 [2nd student is secured 9 marks than 1st].
Ravi said:
1 decade ago
Option method is too easy and fastest way to solve this question.
Mazher said:
10 years ago
@Tukuna Behera.
Why did we take the 25 to the R.H.S, that's the only step I did not understand, help please, or any one, why did we take the 25 to the Right Hand Side?
Why did we take the 25 to the R.H.S, that's the only step I did not understand, help please, or any one, why did we take the 25 to the Right Hand Side?
SandipWaghmare said:
10 years ago
@Sawant.
= 30/100*x = 180*100/30.
x = (180*100/30)100/30.
x = 270.
= 30/100*x = 180*100/30.
x = (180*100/30)100/30.
x = 270.
Babajan said:
10 years ago
Which formula of percentage are used in this question?
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