It will expand. Or it will grow.
Whole package weighs 20pounds
1.65 = 5pounds
0.12 = extra pound
3.45 - 1.65 = 1.80 : 0.12 = 15pounds
Adding up 15pounds and the first 5 pounds equal 20 pounds
As mentioned mean is b . you multiply it with 8 so the data would 8b.