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:
39, 30
41, 32
42, 33
43, 34
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.

Krishna said:   1 decade ago
@uttam

How it can be 56%-44%=9%?

Can you explain it?
(1)

Babajan said:   9 years ago
Which formula of percentage are used in this question?

Aravind said:   1 decade ago
Why we put equate here between x+9 = 56/100* (x+9+x).

Deepikaravikumar said:   8 months ago
Still, I can't understand this. Please explain to me.
(25)

Sunil said:   9 years ago
What calculation do for this 25(x + 9) = 14(2x + 9)?

Bismah hanif said:   8 years ago
How? Please explain in detail. @Asif Husain Jafri.

Balaganesh said:   4 years ago
@Pawan.

From the QN, Sum of their mark % is 56%.

Gaurav said:   5 years ago
@Geetha.

It comes 25/14 when you divide 56/100.

Rohan said:   7 years ago
@Hiren Savalia.

Can you elaborate your method?

Chernet said:   3 years ago
Thanks all for giving an excellent explanation.
(9)


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