Question

Calcula el 13.5% de 260

Answer 1

260     100%
x         13.5%

multiplicas en x 
x =260 * 13.5 
    -----------------
          100

x = 35.1

Answer 2

200 - 100%
X - 13.5%


100*X=260 * 13.5
X= 35.1