Answer is 6 kg:
Given that Adam was asked to post a parcel. The weight of the parcel was 12 lbs and 8 oz.
To convert the weight in kgs:
Let us convert oz into pounds first to make it uniform.
We have 16 0z. = 1 lb
Hence 8 oz. = 8/16 = 0.5 lbs
Weight of the parcel = 12.5 lbs.
We have the converting factor as
2.2 pounds make 1 kg.
Hence 12.5 pounds = 12.5/2.2 = 5.6818
So weight of the parcel in kg= 6. (after rounding off)