Answer:
160 nails
Explanation:
from the question we are given the following
mass of container and nails = 3.0 lb
mass of a dozen nails = 0.225 lb
number of nails = ?
we first have to find how many dozen of nails are in the container.
number of dozen = mass of container and nails / mass of a dozen nails
number of dozen = 3 / 0.225
number of dozen = 13.33 dozens
now since 12 nails make a dozen nails, we just have to multiply 13.33 by 12
number of nails = 13.33 x 12 = 160 nails