A lead sinter to be smelted in a blast furnace analyses 8 % CaO, 25% SiO2, and 15 % Fe. In smelting this sinter, a slag is desired with CaO, FeO and SiO2 in the proportions.com. CaO: FeO: S1O2 = 2: 5: 6 To obtain this slag, iron ore and limestone of the following analyses are added to the charge: Iron ore Limestone Wt% Fe 45 2 Wt%CaO 0.5 46 Wt%SiO2 15 8 In addition, coke is to be added to the charge as a fuel in an amount equal to 12 percent of the weight of (sinter+iron ore+limestone). The coke contains 2.5% Fe2O3 and 12%SiO2. Assuming that all the lime, iron and silica enter the slag as CaO, FeO and SiO, calculate the weights of iron ore, limestone and coke to be used per metric ton of lead sinter.