If it's .550, not just 550 it is referring to the percent (.550x100=55%) of silver the product is made from.
January, 1951
Many vintage pieces of hammered aluminum are numbered. I think it is similar to a serial number in that all items with the same shape and design would have the same number.
All 500-series projectors can take the 593 tray.
yes- see the link below marked PICTURES
Mean average of 175, 550, 750 & 1100 (175+550+750+1100)/4 = 643.75
The answer should be -10% as the discount price 10% more than the original price.
220
It means 550-330 years before common era. BCE stands for before common era.
If you mean the DSLR camera its Sony.
550 + 550 = 1100
30% off $550 = $385= $550 - (30% * $550)= $550 - (0.30 * $550)= $550 - $165= $385
495550 decreased by 10 percent= 550 - (10% * 550)= 550 - (0.10 * 550)= 550 - 55= 495