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 4 of 6.
NitishPandey said:
9 years ago
@Anwi.
Son and father average age =11x+5x in linear sequence 11x is father and 5x is son,
11x+5x=40 so,
(11x+5x)=40 * 2 because here only possibility of two person father and son,
16x=80,
x=5.
Then son age = 5 * 5
So ans 25,
Hope you understand.
Son and father average age =11x+5x in linear sequence 11x is father and 5x is son,
11x+5x=40 so,
(11x+5x)=40 * 2 because here only possibility of two person father and son,
16x=80,
x=5.
Then son age = 5 * 5
So ans 25,
Hope you understand.
Abhay said:
9 years ago
67 is not the correct answer.
The correct answer is 66.5.
(65+68)/2=66.5
So the correct answer is option E.
The correct answer is 66.5.
(65+68)/2=66.5
So the correct answer is option E.
Harika said:
9 years ago
Nice explanation thank you @Jasmine.
Harsha said:
1 decade ago
From the question itself. We are going to know that the age is in between 65-68.
So 66, 67, 68.
Why 66.....because. It should be greater than 65 as @Arun said Why 67....because as per his brother opinion <60 & >70.
As per his mother his age is definitely 68. So eliminate 69, 70 so according to his brother. His age is 67....why 68..... his mother gave a statement that he is 68 years old.
So 66, 67, 68.
Why 66.....because. It should be greater than 65 as @Arun said Why 67....because as per his brother opinion <60 & >70.
As per his mother his age is definitely 68. So eliminate 69, 70 so according to his brother. His age is 67....why 68..... his mother gave a statement that he is 68 years old.
Vinod said:
2 decades 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.
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.
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