please help me with my math, some of the questions are confusing such as 8A,8B,9B,10A and 10B

Answer:
Step-by-step explanation:
1 oz = 0.0625 lb
1 lb = 16 oz
1a. 48 oz = 3 lb 1b. 5 lb = 80 oz
2a. 64 oz = 4 lb 2b. 144 oz = 9 lb
3a. 96 oz = 6 lb 3b. 8 lb = 128 oz
4a. 112 oz = 7 lb 4b. 10 lb = 160 oz
5a. 2 lb = 32 oz 5b. 16 oz = 1 lb
6a. 96 oz = 6 lb 6b. 16 oz = 1 lb
7a. 10 lb = 160 oz 7b. 80 oz = 5 lb
8a. 19 oz = 1.1875 lb 8b. 5 lb = 80 oz
9a. 5 lb = 80 oz 9b. 7 lb = 112 oz