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Aptitude - Average - Discussion

Discussion Forum : Average - General Questions (Q.No. 10)
Average
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?
67 kg.
68 kg.
69 kg.
Data inadequate
None of these
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.
Ashish said:   9 years ago
There is not mentioned that >= means 66+67/2 = 66.5.

So, answer is none of these.
Rahul said:   9 years ago
We can do like that

56 + 72 + 60 + 70 + 68 = 335.
335 ÷ 5 = 67 answer.
Minu said:   6 years ago
You can also average all 5 numbers:
60+72+68+65+70 = 335,
335/5 = 67kgs.
(26)
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
(1)
Ankit said:   7 years ago
If it is greater than and less than why don't we take x+65 and x-70?
(1)
Utkarsh Patil said:   7 years ago
Why did anyone not take probable weights from 65.1 to 67.9?
Kranthi said:   3 years ago
@Jasmine

You explained the answer very well. Thank you.
(4)
Mithun said:   7 months ago
Best and easiest explanation. Thank you, @ANUKA.
(1)
Sakshi said:   1 decade ago
Can anyone explain it in another way? Please.
(1)
Ashwini said:   1 decade ago
@jasmine

Explained very well. Thank you. :-)
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