Respuesta :

a.) [tex] \frac{number of rolls}{total rolls} [/tex] = [tex] \frac{9}{50} [/tex]

     Turn that into a decimal to find percent
      [tex] \frac{9}{50} [/tex] = 0.18
      100 * 0.18 = 18%

b.)  [tex] \frac{number of rolls}{total rolls} [/tex] = [tex] \frac{23}{50} [/tex]

      [tex] \frac{23}{50} [/tex] = 0.46
      100 * 0.46 = 46%