200 shells per carton. 600 cigarettes per pound so 16 ounces divided into that is .03 ounces per cigarette or 6 ounces per carton. so 0.6 ounces per pack so the shell weighing .4 to .5 ounces makes sense I guess.
A bit map (often spelled bitmap) defines a display space and the color for each pixel or bit in the display space. A Graphics Interchange Format and a JPEG are examples of graphic image file types that contain bit maps. A bit map does not need to contain a bit of color-coded information for each pixel on every row. It only needs to contain information indicating a new color as the display scans along a row.
The JPG file type is primarily associated with 'JPEG/JIFF Image'. A lossy bitmap image format used by digital cameras and to display photographs on the Web (along with many other like uses). If you plan to edit a JPEG file save it first as a BMP or other lossless bitmap format. Edit that and then use SaveAs to resave as a JPEG file. If you edit and reedit a JPEG file you will suffer a compression loss on each read/save operation. The Macintosh type is: JPEG.