Răspunsuri

2014-06-04T17:17:14+03:00
Faci cu regula de 3 simpla
63l lapte.....................................3kg unt 
420l lapte...................................x kg unt
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x= \frac{420*3}{63} = \frac{1260}{63} =20   (unt )
1 5 1
Cel mai inteligent răspuns!
2014-06-04T17:33:31+03:00