3 h 20 min
4 h 25 min
+ 5 h 35 min=13 hrs 20 min
9 lb 15 oz
- 5 lb 8 oz=4 lbs 7 oz
Mark uses 1 pt 9 fl oz and then 2 pt 10 fl oz from a container of film
developer that holds 3 qt. How much of the developer remains?=1 pt 13 oz
See:
http://www.jiskha.com/display.cgi?id=1254360007