Rozcieńczono solankę 3% i otrzymano 6 litrów solanki 2%. ile wody użyto?
x - woda
y - solanka 3%x + y = 6------------->x = 6 - yy*0,03 = 6*0,020,03y = 0,12y = 4 litry solanki 3%
x = 6 - y
x = 6 - 4
x = 2 litry wody
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x - woda
y - solanka 3%
x + y = 6------------->x = 6 - y
y*0,03 = 6*0,02
0,03y = 0,12
y = 4 litry solanki 3%
x = 6 - y
x = 6 - 4
x = 2 litry wody