Question No. 9
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Choose the correct alternative.
Milk to water ratio was 5:6 and 7:5 in the milk sold by A and B respectively. One day they mixed their milk in ratio 2:3. What was the approximate
percentage of pure milk in the mixture?
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Answer:
In A, ratio of milk to water is = 4:5
In B, ratio of milk to water is = 5:1
Ratio of milk to water when A and B mixed = 5:4
Quality of milk in A=
9
4
Quality of milk in B=
6
5
Quality of milk in final mixture =
9
5
Applying rule of Allegation,
REF image
We get,
A:B as 5:2
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