exercitiu repede! ofer coroana!!!! multumesc!!!
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Răspuns:
Explicație:
c! *79/100 +c2 *8100 =79,90
79c1 +81c2 =7990
c1+c2= 100 l*79
.................................
/ 2c2 =90
c2= 90:2
c2 =45 %
c1= 90-45=55%