Răspuns :
15kg....9L
x kg...15L
[tex] \frac{15}{x} = \frac{9}{15} [/tex]
[tex]x = \frac{15 \times 15}{9} [/tex]
x=25
x kg...15L
[tex] \frac{15}{x} = \frac{9}{15} [/tex]
[tex]x = \frac{15 \times 15}{9} [/tex]
x=25