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:
60 comments Page 6 of 6.
Muneer said:
1 decade ago
Can anyone explain in a simple way?
Vasan said:
1 decade ago
@Venu, explained very well.
Ashwini madne said:
1 decade ago
According to Arun, 65 < X < 72.
[(65 + 72/2) = 68.5 ie 69].
According to Arun's brother, 60 < X < 70.
[(60 + 70/2) = 65].
According to Arun's mother, X <= 68.
Required Average = (69 + 65 + 68)/3.
= 202/3.
= 67.33 i.e 67kg ==> answer.
[(65 + 72/2) = 68.5 ie 69].
According to Arun's brother, 60 < X < 70.
[(60 + 70/2) = 65].
According to Arun's mother, X <= 68.
Required Average = (69 + 65 + 68)/3.
= 202/3.
= 67.33 i.e 67kg ==> answer.
Rajeshwari said:
1 decade ago
Thank you @Sathiya.
Thiruppathy said:
1 decade ago
@Anwi,
The answer is 133. Am I right?
The answer is 133. Am I right?
Prateek bhaiya said:
10 years ago
Acccording to me,
Given condition : x > 65 & amp; x < 72(according to Arun opinion).
x > 60 & x < 70(according to Arun's brother).
x < = 68(according to Arun's mother).
So, average age = 65 + 72 + 60 + 70 + 68/5.
335/7 = 67.
Ans is 67.
Given condition : x > 65 & amp; x < 72(according to Arun opinion).
x > 60 & x < 70(according to Arun's brother).
x < = 68(according to Arun's mother).
So, average age = 65 + 72 + 60 + 70 + 68/5.
335/7 = 67.
Ans is 67.
Pavan said:
2 decades ago
How did take 66, 67 and 68 ?
Mandeep said:
10 years ago
Thanks Prateek for clear solution.
Rahul said:
10 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:
10 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.
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