8. naloga

Bron je zlitina bakra in kositra v razmerju 47 : 3. Koliko kositra je v spomeniku, ki tehta 350 kg ?

(Vir: http://www.stern.si/siteasp/app/getThumb/getThumb.asp?image=/files/novice/finance.jpg&width=200&height=170&fit=1&watermark=&wmdissolve=112)