20 percent of 443 is 88.6
20 plus 15 percent = 23
443 + 567 = 1,010
23 percent plus 15 percent is 38 percent. However, this only works if the percents are of the same thing.
(15%) + (10%) = 0.25
443.
138.00 + (15%) = 158.70
25 + (15%) = 28.75
14.00 + (15%) = 16.10
1,779.00 + 15% = 2,045.85
48.87
115