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 6 of 6.
Vasan said:
10 years ago
@Venu, explained very well.
Ashwini madne said:
10 years 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:
10 years ago
Thank you @Sathiya.
Thiruppathy said:
10 years ago
@Anwi,
The answer is 133. Am I right?
The answer is 133. Am I right?
Pavan said:
2 decades ago
How did take 66, 67 and 68 ?
Navneet gupta said:
10 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.
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