Of the two kinds of alloys, silver and copper are contained in the fir – McqOptions

MCQOPTIONS

1.	Of the two kinds of alloys, silver and copper are contained in the first in the ratio of 5:1 and in the other in the ratio 7:2. In what ratio of the two alloys should be melted and mixed together so as to make up a 5 kg mass with 80% of silver -
A.	0.0854166666666667
B.	0.170138888888889
C.	0.127777777777778
D.	0.0430555555555556
Answer» B. 0.170138888888889

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