Zinc and copper are melted together in the ratio 9 : 11. What is the weight of melted mixture, if 33.3 kg of zinc has been consumed in it?  Choose the correct answer:
A) 58 kg B) 60 kg C) 64 kg D) 70 kg E) 74
Sol.   For 9 kg Zinc, mixture melted = (9+11) kg.   For 33.3 kg Zinc, mixture, melted = [20/9 x 33.3] kg   = 74 kg.   Answer 74
<result>E</result>
Zinc and copper are melted together in the ratio 9 : 11. What is the weight of melted mixture, if 33.3 kg of zinc has been consumed in it?