70%
Expressed as a percentage, 280/400 x 100 = 70 percent.
280
seventy 28/40 x 100 = 2,800/40 = 280/4 = 70/1 = 70
280/70 = 4
280 in a percentage = 28000%
280 56 * 5 = 280 70 * 4 = 280
4
70
280 as a percentage of 350 is 80%
70/280 = 1/4
The GCF is 70.