Answer:
14 lb and 13 oz
Step-by-step explanation:
4 lb 15 oz and twice as much, in total?
1 lb = 16 oz
3(4 lb) and 3(15 oz)
12 and 45 oz = 2 lb and 13 oz
12 lb + 2 lb and 13 oz = 14 lb and 13 oz