Question

32 kg lina oaie si 17 kg mohair au costat 41200 lei. 32 kg lina si 12 kg mohair au costat 35200 lei. Aflati cati lei au castat 7 kg lina de oaie si 5kg de mohair.

Answer 1

32 kg lana ...........17 kg mohair..........41200 lei
32 kg lana ...........12 kg mohair..........35200 lei
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/ .......................... 5 kg mohair..........  6000 lei⇒ 1 hg mohair= 6000:5=1200 lei
32 kg lana = 35200 -(12X1200)=35200-14400=20800 lei
32 kg lana=20800 lei⇒ 1kg lana =20800:32=650 lei
1kg lana =650 lei
7 kg lana= 650x7=4550 lei
7 kg lana= 4550 lei
5 kg mohair=6000 lei