Aptitude - Average - Discussion
Discussion Forum : Average - General Questions (Q.No. 10)
10.
In Arun's opinion, his weight is greater than 65 kg but less than 72 kg. His brother does not agree with Arun and he thinks that Arun's weight is greater than 60 kg but less than 70 kg. His mother's view is that his weight cannot be greater than 68 kg. If all are them are correct in their estimation, what is the average of different probable weights of Arun?
Answer: Option
Explanation:
Let Arun's weight by X kg.
According to Arun, 65 < X < 72
According to Arun's brother, 60 < X < 70.
According to Arun's mother, X <= 68
The values satisfying all the above conditions are 66, 67 and 68.
 Required average = |
 |
66 + 67 + 68 |  |
= | |
201 | |
= 67 kg. |
| 3 | 3 |
Discussion:
58 comments Page 1 of 6.
Pavan said:
2 decades ago
How did take 66, 67 and 68 ?
Vinod said:
1 decade ago
As arun said, his weight is greater than 65 kg, and mother said, his weight cannot be greater than 68 kg.
then value will be 65<=68
It means value is 66,67,68.
then Required average = 66 + 67 + 68 = 201 = 67 kg.
then value will be 65<=68
It means value is 66,67,68.
then Required average = 66 + 67 + 68 = 201 = 67 kg.
Sakshi said:
1 decade ago
Can anyone explain it in another way? Please.
(1)
Jasmine said:
1 decade ago
@Sakshi
As arun 65 to 72 so lets take 65,66,67,68,69,70,71 then as arun's brother 60 to 70 so delete 70,71 from the list then according to arun's mom surly less than or equal to 68 so delete 69 and 70 from list so finally lets take 66,67,68 k.. simple...
As arun 65 to 72 so lets take 65,66,67,68,69,70,71 then as arun's brother 60 to 70 so delete 70,71 from the list then according to arun's mom surly less than or equal to 68 so delete 69 and 70 from list so finally lets take 66,67,68 k.. simple...
(8)
Mini said:
1 decade ago
@JASMINE.
You explained it very well.
You explained it very well.
Ashwini said:
1 decade ago
@jasmine
Explained very well. Thank you. :-)
Explained very well. Thank you. :-)
Sathiya said:
1 decade ago
Can i explain like this
According to arun 65to72
then he's brother 60to70
He's mother 68
Then 65+72+60+70+68=335
335/5=67
The answer is 67 .
This method right or wrong explain anyone.
According to arun 65to72
then he's brother 60to70
He's mother 68
Then 65+72+60+70+68=335
335/5=67
The answer is 67 .
This method right or wrong explain anyone.
James silberschatz said:
1 decade ago
71+69+68/3=6.33
Suman said:
1 decade ago
I don't understand anyone explain again.
Gopal said:
1 decade ago
Arun-65+72/2=68.50
brother-60+70/2=65.00
mom- 68.00
total
=201.50/3= 67
brother-60+70/2=65.00
mom- 68.00
total
=201.50/3= 67
(1)
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