Two alloys A and B contain gold and copper in the ratios of 2 : 3 and – McqOptions

MCQOPTIONS

1.	Two alloys A and B contain gold and copper in the ratios of 2 : 3 and 3 : 7 by mass, respectively. Equal of alloys A and B are melted to make an alloy C. The ratio of gold to copper in alloy C is ____.
A.	5 : 10
B.	7 : 13
C.	6 : 11
D.	9 : 13
Answer» C. 6 : 11

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