Answer:
0.138 hanks/lb
Step-by-step explanation:
Given:
Silver = 60 grain/yd
Now,
1 hank = 840 yd
or
1 yd = [tex]\frac{\textup{1}}{\textup{840}}[/tex] hank
And,
1 lb = 7000 grain.
or
1 grain = [tex]\frac{\textup{1}}{\textup{7000}}[/tex] lb
Thus,
60 grain/yd = [tex]\frac{60\times\frac{1}{7000}}{1\times\frac{1}{840}}[/tex] lb/hanks
or
60 grain/yd = 7.2 lb/ hanks
or
[tex]\frac{\textup{1}}{\textup{7.2}}[/tex] hanks/lb
or
0.138 hanks/lb
