First, calculate what is 20% of 25.60 equal to.
To do so, just multiply 25.60 times 0.20:
[tex]25.60\cdot0.20=5.12[/tex]Add the tip of 5.12 to the original quantity of 25.60:
[tex]25.60+5.12=30.72[/tex]Therefore, 25.60 with a tip of 20 percent, is 30.72