Răspuns:
Explicație pas cu pas:
12b_____6f_____150kg /x2
24b____13f_____305kg
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24b_____12f_____300
24b_____13f_____305
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//_______1f______5
1 fata=5kg
inlocuim necunoscutele:
12b+6*5=15
12b+30=150
12b=120
1 baiat=10kg
12*10+6*5=120+30=150