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 12 of 13.
Rudrendra said:
6 years ago
@Nik.
Well explained, Thanks.
Well explained, Thanks.
Random said:
2 years ago
Good Explanation, thanks all.
(10)
Er Dharmendra Kumar said:
9 years ago
83-63/(1/2) = 2*20 = 40.
Royal said:
7 years ago
Nice explanation @Nik.
Usman Khan said:
5 months ago
Good session, thanks.
S.Rohini said:
4 years ago
@Rakesh.
Thank you.
Thank you.
Ash said:
1 decade ago
Karthy is right....
Praveen said:
1 decade ago
Please explain.
Yash said:
7 years ago
Thank you @Nik.
Arun said:
7 years ago
83-63/.5 = 40.
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