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? - Study24x7
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26 Mar 2019 02:35 PM study24x7 study24x7

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?

A

1 : 3

B

2 : 3

C

3 : 4

D

4 : 5

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