.2 * 115 = $23
23 percent of 640 is 147.2
20 x (1 + (15/100)) = 20 x 1.15 = 23
23 percent as a fraction in the lowest terms is 23/100.
21.6
15% of 23 is 3.45
Multiply .23 by 790
23 smackaroos
23 percent plus 15 percent is 38 percent. However, this only works if the percents are of the same thing.
$4.60
1.38
$9.2.
20 plus 15 percent = 23
3.45
.2 * 115 = $23
It is: (15/23)*100 = 65.22% rounded to 2 decimal places
About £15