A) 2 : 1
B) 2 : 3
C) 3 : 2
D) 1 : 2
Correct Answer: A
Solution :
Ratio of Copper and Zinc \[=5:2\] Total weight of alloy \[=17500\,g\] \[\therefore \] Weight of Copper \[=\frac{5}{7}\times 17500=12500\,g\] \[\Rightarrow \] Weight of Zinc \[=17500-12500\] \[=5000\,g\] 1250 g of Zinc is mixed with the alloy. \[\therefore \] Total weight of Zinc \[=5000+1250=6250\,g\] \[\therefore \] New ratio \[=12500:6250\] \[=2:1\]You need to login to perform this action.
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