1.

Two solutions S1 and S2 contain whisky and soda in the ratio 2 : 5 and 6 : 7 respectively. In what ratio these solutions be mixed to get a new solution S3, containing whisky and soda in the ratio 5 : 8 ?

A. 7:9
B. 21:5
C. 23:6
D. 6:23
Answer» B. 21:5


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