In what ratio must a mixture of 15% spirit strength be mixed with that of 25% spirit strength to get a mixture of 21% spirit strength?_x005F_x000D_

In what ratio must a mixture of 15% spirit strength be mixed with that

1.	In what ratio must a mixture of 15% spirit strength be mixed with that of 25% spirit strength to get a mixture of 21% spirit strength?_x005F_x000D_
A.	0.04375
B.	0.085416666666667
C.	0.12777777777778
D.	0.17013888888889
Answer» C. 0.12777777777778

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In what ratio must a mixture of 15% spirit strength be mixed with that of 25% spirit strength to get a mixture of 21% spirit strength?_x005F_x000D_

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