Two liquids A and B of 9 0- and 9 7- purity are mixed giving 2 1 - of a mixture with 9 4- purity- What is the quantity of the liquid - in the final mixture-

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Standard VI

Mathematics

Ratio a:b:c and Its Simplification

Two liquids A...

Question

Two liquids A and B of 90 $%$ and 97 $%$ purity are mixed giving 21L of a mixture with 94 $%$ purity. What is the quantity of the liquid A in the final mixture?

15L

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12L

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None of these

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Solution

The correct option is C
9L

90 $%$ and 97 $%$ mixed to form 94 $%$ can give us a conclusion that the ratio of mixing is 3 $:$ 4.

So, the amount of first liquid is 3 $\times$ $\frac{21}{7}$ = 9L

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Two liquids A and B of 90% and 97% purity are mixed giving 21L of a mixture with 94% purity. What is the quantity of the liquid A in the final mixture?

The correct option is C 9L 90% and 97% mixed to form 94% can give us a conclusion that the ratio of mixing is 3 : 4. So, the amount of first liquid is 3×217 = 9L

Two liquids A and B of 90 $%$ and 97 $%$ purity are mixed giving 21L of a mixture with 94 $%$ purity. What is the quantity of the liquid A in the final mixture?

The correct option is C
9L

90 $%$ and 97 $%$ mixed to form 94 $%$ can give us a conclusion that the ratio of mixing is 3 $:$ 4.

So, the amount of first liquid is 3 $\times$ $\frac{21}{7}$ = 9L