Răspuns :
18 kg verde ------------------------------------------ 15 kg prajita
150 kg verde ---------------------------------------- x kg prajita
==============================================
150 x 15 2250
x= --------------- = -------- = 125 kg cafea prajita
18 18
150 kg verde ---------------------------------------- x kg prajita
==============================================
150 x 15 2250
x= --------------- = -------- = 125 kg cafea prajita
18 18