Answer:
2. 30 lb; 3. 12 pt; 4. 19 h 5 min
Explanation:
2. Pounds and ounces
Add the pounds and ounces separately.
1 lb = 16 oz
If the ounces are 16 or more, subtract 16 from the ounces and add 1 to the pounds
12 lb 8 oz
+ 17 lb 8 oz
29 lb 16 oz
+ 1 lb - 16 oz
30 lb
3. Pints and cups
Add the pints and cups separately.
1 pt = 2 c
If the cups are 2 or more, subtract 2 from the cups and add 1 to the pints.
7 pt 1 c
+ 4 pt 1 c
11 pt 2 c
+ 1 pt - 2 c
12 pt
4. Hours and minutes
Add the hours and minutes separately.
1 h = 60 min
If the minutes are 60 or more, subtract 60 from the minutes and add 1 to the hours.
17 h 40 min
+ 1 h 25 min
18 h 65 min
+ 1 h - 60 min
19 h 5 min