a)tuzin-jaki to procent kopy,jaki to procent mendla?
tuzin=12 szt.
kopa=60szt
mendel=15 szt
12/60100%=20%
tuzin-to procent 20% kopy.
12/15100%=80%
tuzin to 80% mendla.
b) mendel-jaki to procent kopy,a jaki to procent tuzina ?
15/60100%=25%
mendel to 25% kopy
15/12100%=125%
mendel to 125 % tuzina