In Arun's opinion, his weight is greater than 65kg but less than 72kg.
His brother does not agree with Arun and he thinks that Arun's weight is greater than 60kg but less than 70kg.
His mother's view is that his weight cannot be greater than 68kg.
If all are them are corrct in thier estimation, what is the average of different probable weights of Arun?
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 mohter, X <= 68
The values satisfying all the above conditions are 66, 67 and 68.
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