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.
Ashwin said:
5 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:
5 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:
5 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.
Swathi krishna said:
5 years ago
Given,
One of them secured 9 Mark's more than other.
And one person got 56%, the second person got 100-56=44.
Difference 56 - 44 = 12, So 12% is 9 Mark's.
12------------>9Mark's
56------------>?
56 * 9/12=42.
One person got 42 Mark's.
Another person got 42 - 9 = 33marks.
One of them secured 9 Mark's more than other.
And one person got 56%, the second person got 100-56=44.
Difference 56 - 44 = 12, So 12% is 9 Mark's.
12------------>9Mark's
56------------>?
56 * 9/12=42.
One person got 42 Mark's.
Another person got 42 - 9 = 33marks.
(3)
Harsha said:
5 years ago
Why we make x+x+9 their? I am not getting that, Anyone explain me.
(1)
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.
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