Correct Answer: Option A
Let Ashik's weight by X kg.
According to Ashik, 65 < X < 72
According to Ashik's brother, 60 < X < 70.
According to Ashik's mother, X <= 68
The values satisfying all the above conditions are 66, 67 and 68.
Required average = (66 + 67 + 68)/3
= 201/3 = 67 kg.
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