I've seen this symbol on several different Mercedes-Benz models. The best answer I can come up with in a Google search is that it means they were sold at the Mercedes-Benz of Alexandria (in Virginia). To me, that makes sense, because I live in the Washington, DC area, close to Alexandria. However, if you don't live in the DC area, that may not be the correct answer.
It is 4 times 320 = 1280
80, 160, 320
320.
Assuming you want one pencil per student, you'll need 320 of them. 320 is the next highest multiple of 10.
320 thousands
50 percent of 320 = 16050% of 320= 50% * 320= 0.50 * 320= 160
You've got to get 320 points to get to the next stage which probaly is quite hard
85% of 320= 85% * 320= 0.85 * 320= 272
65% of 320= 65% * 320= 0.65 * 320= 208
21% of 320= 21% * 320= 0.21 * 320= 67.2
110% of 320= 110% * 320= 1.1 * 320= 352
88% of 320= 88% * 320= 0.88 * 320= 281.6