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 17 of 18.
Ashwin said:
6 years ago
@Sarwat
30%of number 180,
30/100*y=180.
y=600.
15%of3(number) =? .
15/100*3(600) =2700.
30%of number 180,
30/100*y=180.
y=600.
15%of3(number) =? .
15/100*3(600) =2700.
Ruhi said:
6 years ago
Total 100%.
One got 56 then the other got 44.
Diff 12%=9 (one got 9 marks more),
56%=42.
And 44%=33.
One got 56 then the other got 44.
Diff 12%=9 (one got 9 marks more),
56%=42.
And 44%=33.
SANJAY said:
6 years ago
@All.
Simply, the solution is;
56 % and balance is 44, Right!
56/100 = 9,
56 - 44 / 100 = 9,
It will give you 75.
THEN,
56/100 X 75 = 42.
44/100 X 75 = 33.
Simply, the solution is;
56 % and balance is 44, Right!
56/100 = 9,
56 - 44 / 100 = 9,
It will give you 75.
THEN,
56/100 X 75 = 42.
44/100 X 75 = 33.
Tiki said:
5 years ago
Thanks @Neelu.
Ntb said:
5 years ago
which formula did we use in this? Anyone explain me, please.
Raveesh r said:
5 years ago
42+33 = 75.
42/75*100 = 56%.
42/75*100 = 56%.
Vaishnavi said:
5 years ago
How can you guys are multiplying with x+x+9?
Is 56% is total marks scored by both of 2 students.
I am getting confused. Please explain.
Is 56% is total marks scored by both of 2 students.
I am getting confused. Please explain.
Anju said:
5 years ago
Listen, 56% of SUM OF THEIR MARKS is equal to 2nd person mark.
So, we can simplify 56/100.
By simplifying it we get 14/25.
So we can say that mark of 2nd person is 14 and the first one is 11(we get 11 by subtracting 25-14).
We know that 14-11 is 9 (it's already given in the answer).
That is 3=9.
So, 1=3.
Therefore 14*3 = 42 and 11*3 = 33.
So, we can simplify 56/100.
By simplifying it we get 14/25.
So we can say that mark of 2nd person is 14 and the first one is 11(we get 11 by subtracting 25-14).
We know that 14-11 is 9 (it's already given in the answer).
That is 3=9.
So, 1=3.
Therefore 14*3 = 42 and 11*3 = 33.
Anomie said:
5 years ago
x+9=56/100(2x+9),
How did you reach to this step?
How can you equate both student marks although they have a difference of 9 marks
L.H.S = marks of 2nd student
R.H.S = marks in the percentage of 1st student out of the total sum of the marks scored by both of them.
Please anyone explain it.
How did you reach to this step?
How can you equate both student marks although they have a difference of 9 marks
L.H.S = marks of 2nd student
R.H.S = marks in the percentage of 1st student out of the total sum of the marks scored by both of them.
Please anyone explain it.
Geetha said:
5 years ago
Where does this 25 and 14 in equation come? Please explain about it.
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