Aptitude - Average - Discussion
Discussion Forum : Average - General Questions (Q.No. 15)
15.
A pupil's marks were wrongly entered as 83 instead of 63. Due to that the average marks for the class got increased by half (1/2). The number of pupils in the class is:
Answer: Option
Explanation:
Let there be x pupils in the class.
| Total increase in marks = |  |
x x | 1 |  |
= | x |
| 2 | 2 |
 |
x | = (83 - 63)  |
x | = 20 x= 40. |
| 2 | 2 |
Discussion:
123 comments Page 11 of 13.
Vishal said:
1 decade ago
@ sowjanya...
7x/4y +2x/9y=1/1
we get 2:3
7x/4y +2x/9y=1/1
we get 2:3
Ashok said:
7 years ago
Please explain me, I am not getting this.
Jayshree said:
9 years ago
The Correct average increased by half.
Thiru said:
9 years ago
(83 - 63) = 20,
X * 20 = 1/2,
= 40.
X * 20 = 1/2,
= 40.
Kavita said:
5 months ago
Thank you for explaining the answer.
Arun said:
1 decade ago
Can you explain it briefly please ?
Yash said:
7 years ago
@Nik.
Thanks for your explanation.
Thanks for your explanation.
M.V.KRISHNA/PALVONCHA said:
1 decade ago
Hai nik. Your explanation is nice.
Arunoid said:
1 decade ago
Please help the needy and me too.
Sumaira said:
9 years ago
Thanks for your explanation @Nik.
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