1.

A and B are two alloys of gold and copper prepared by mixing metals in ratios 7 : 2 and 7 : 11 respectively. If equal quantities of the alloys are melted to form a third alloy C, the ratio of gold and copper in C will be ;

A. 7 : 5
B. 5 : 9
C. 9 : 5
D. 5 : 7
Answer» B. 5 : 9


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