25l lapte--------------------3lsmantana
75l lapte---------------------xl smantana
x=75*3:25=9l
25l lapte--------------------3lsmantana
180l lapte---------------------xl smantana
x=180*3:25=21,6l
25l lapte--------------------3lsmantana
0,5l lapte---------------------xl smantana
x=0,5*3:25=0,06l
b
25l lapte--------------------3lsmantana
xl lapte---------------------4,5l smantana
x=25*4,5:3=37,5 l
25l lapte--------------------3lsmantana
xl lapte---------------------0,5l smantana
x=25*0,5:3=4,1(6) l
25l lapte--------------------3lsmantana
xl lapte---------------------0,6l smantana
x=25*0,6:3=5 l