Question 1169943
I agree up to point where you calculate the weight of each bearing.
Since the volume of each bearing is 0.00006545 cu. ft, each bearing weighs:
W = 500 lb/ft^3 * 0.00006545 ft^3 = 0.032725 lb.
Thus, there are 100 lb/0.0327249 lb/bearing = 3055 bearings.