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:
170 comments Page 13 of 17.
Purwa said:
8 years ago
Great explanation, thanks @Neelu.
Bhusan said:
8 years ago
Hi, can you please explain it came?
Then, x + 9 = 56 (x + 9 + x)
100
25(x + 9) = 14(2x + 9).
If we divide with 4 by 56/100 then the answer is 25 and 14. My question is how 4 came into picture?
Then, x + 9 = 56 (x + 9 + x)
100
25(x + 9) = 14(2x + 9).
If we divide with 4 by 56/100 then the answer is 25 and 14. My question is how 4 came into picture?
Albert Einstein said:
8 years ago
Let their marks be (x + 9) and x.
Then, x + 9 = 56/100(x + 9 + x).
25(x + 9) = 14(2x + 9),
3x = 99,
x = 33.
So, their marks are 42 and 33.
Then, x + 9 = 56/100(x + 9 + x).
25(x + 9) = 14(2x + 9),
3x = 99,
x = 33.
So, their marks are 42 and 33.
Hari said:
8 years ago
25(x+9) = 14(2x+9).
Why 25 came here? Explain briefly.
Why 25 came here? Explain briefly.
Raja said:
8 years ago
Explain it.
In an exam, 5%of the application were found ineligible &85% of the eligible candidates belongs to general category. If 4275 eligible candidates belonged to other categories, then how much candidates applied for the exam?
90% application is a general category and ineligible. So balance 10%are other categories and it's 4275 application. So 10%is equal to 4275 then 100% is equal to 42750 application.
In an exam, 5%of the application were found ineligible &85% of the eligible candidates belongs to general category. If 4275 eligible candidates belonged to other categories, then how much candidates applied for the exam?
90% application is a general category and ineligible. So balance 10%are other categories and it's 4275 application. So 10%is equal to 4275 then 100% is equal to 42750 application.
Nikhila said:
8 years ago
Where you get 25 and 14? Please tell me.
Sonu said:
8 years ago
A family consumes 25 kg rice and 9 kg wheat per month spends Rs. 350. The price of rice is 20% of the price of the wheat. If the price of wheat is increased by 20% then, find the % reduction in consumption of rice, if it has the same amount to spend.
Can anyone answer it?
Can anyone answer it?
Hariharan E said:
8 years ago
Please explain how to get the answer?
Vishwa said:
8 years ago
@Hariharan.
Try to understand.
Assume the first person as A second person as B.
A = 56%.
B = 44%.
Now just take the difference between their%.
A-B=12%.
In the problem itself, they have given that A is 9 more than B.
This 9 marks is nothing but that difference 12%.
Hence 12%-9.
56%-?=42=A.
B=A-9=42-9=33.
Try to understand.
Assume the first person as A second person as B.
A = 56%.
B = 44%.
Now just take the difference between their%.
A-B=12%.
In the problem itself, they have given that A is 9 more than B.
This 9 marks is nothing but that difference 12%.
Hence 12%-9.
56%-?=42=A.
B=A-9=42-9=33.
Shivashankar said:
8 years ago
Thank you @Aparna.
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