520/260 = 2 in simplest form
1/8
260
0.5 x 520 = 260
260, 520, 780 and so on.
260
Yes, 520 / 2 = 260
5/20 = 1/4
Yes, 520 divided by 2 = 260
520% = 520/100 = 5 1/5 [as a mixed number] or 26/5 [as an improper fraction].
If you mean 5-twentieths then 1/4
10 x 52 = 520 so 5 x 52 must be 260 (half of 520) so 15 x 52 = 520 + 260 = 780.