12b--------------------6f--------------------150kg } 2 (amplificam cu 2)
24b-------------------13f-------------------305kg
avem
24b-------------------12f--------------------300kg
24b-------------------13f--------------------305kg
24b=24b
13-12= 1 fata
305-300=5 kg
deci o fata =5kg
6fete=5x6=30
150-30=120 kg pentru toti baietii
120:12=10kg un baiat
deci o fata =5 kg
un baiat=10 kg