6 lb 5 oz – 4 lb 12 oz (There are 16 ounces in one pound.)

Question

A. 2 lb 7 oz
B. 1 lb 7 oz
C. 1 lb 9 oz

Answer 1

To subtract the given quantities, we need to subtract the pounds and ounces separately.

Subtracting pounds: 6 lb - 4 lb = 2 lb

Subtracting ounces: 5 oz - 12 oz = -7 oz

Since we cannot have a negative number of ounces, we need to borrow 1 pound from the 6 pounds to convert 5 ounces to 21 ounces.

Thus, subtracting ounces again: 21 oz - 12 oz = 9 oz

Now we have 2 pounds and 9 ounces, which is represented as 2 lb 9 oz.

Therefore, the answer is option C: 1 lb 9 oz.

Answer 2

6 lb 5 oz = 5 lb 21 oz
then
5 lb 21 oz - 4 lb 12 oz = 1 lb 9 oz