Zinc and copper are melted together in the ratio 9 : 11. What is the weight of melted mixture, if 35.1 kg of zinc has been consumed in it?  Choose the correct answer
A) 78 kg B) 60 kg C) 64 kg D) 70 kg E) None
Sol.   For 9 kg Zinc, mixture melted = (9+11) kg.   For 35.1 kg Zinc, mixture, melted = [20/9 x 35.1] kg   = 78 kg.   78 kgnswer 78 kg
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Zinc and copper are melted together in the ratio 9 : 11. What is the weight of melted mixture, if 35.1 kg of zinc has been consumed in it?