Answer:
- Weight of the fourth parcel will be 10.5 kg
Explanation:
- Weight of first parcal = 7.7 kg
- Weight of second parcel = 7.6 kg
- Weight of third parcel = 8.2 kg
- Mean Weight = 8.5 kg
Let weight of fourth parcel be x
Mean = Sum of all values/total number of values.
8.5 = 7.7 + 7.6 + 8.2 + x/4
8.5 = 23.5 + x/4
8.5 × 4 = 23.5 + x
34 = 23.5 + x
34 - 23.5 = x
10.5 = x
Therefore, weight of the fourth parcel will be 10.5 kg