12 lb 8 oz + 17 lb 8 oz
A. 30 lb
B. 29one-half lb
C. 29 lb
To add the two weights, you can first add the pounds and then add the ounces separately.
Adding the pounds, we have:
12 lb + 17 lb = 29 lb
Then, adding the ounces, we have:
8 oz + 8 oz = 16 oz
However, 16 ounces is equivalent to 1 pound (since there are 16 ounces in a pound). So we can add this extra pound to the previous pounds sum of 29 lb, making a total of:
29 lb + 1 lb = 30 lb
Therefore, the answer is A. 30 lb.