text: math help please and thanks? 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 = 2 cups = 16 oz.  so you just need to convert everything into ounces:  1 pt 9 fl oz = 16 + 9 = 25 oz. 2 pt 10 fl oz = 2 * 16 + 10 = 42 oz.  3 qt = 6 pts = 12 cups = 96 oz.  96 - 25 - 42 = 29 oz.  29 oz. = 16 + 13 = 1 pt 13 oz.