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.
Navneet gupta said:
9 years ago
As per the condition, only three ages i.e 66, 67, 68 comes in range. And the average will be 67.
Mandeep said:
9 years ago
Thanks Prateek for clear solution.
Rahul said:
9 years ago
We can do like that
56 + 72 + 60 + 70 + 68 = 335.
335 ÷ 5 = 67 answer.
56 + 72 + 60 + 70 + 68 = 335.
335 ÷ 5 = 67 answer.
Ashish said:
9 years ago
There is not mentioned that >= means 66+67/2 = 66.5.
So, answer is none of these.
So, answer is none of these.
Harika said:
8 years ago
Nice explanation thank you @Jasmine.
Abhay said:
8 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.
NitishPandey said:
8 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.
Abdul Waheed said:
8 years ago
You are right, Thanks @Gopal.
Jaya priya said:
7 years ago
Well explained, thank you @Jasmine.
Rohit said:
7 years ago
There was not given any condition to consider weights as integer values.
Why take 66, 67 & 68 only?
Well, If he's greater than 65, And what he thinks is correct. He can weight, for instance, 65.1 or maybe 65.2.
Someone help me out here.
Why take 66, 67 & 68 only?
Well, If he's greater than 65, And what he thinks is correct. He can weight, for instance, 65.1 or maybe 65.2.
Someone help me out here.
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