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Question 63
Solution A contains 10% acid and solution B contains 30% acid. In what ratio should solution A be mixed with Solution B to obtain a mixture with 25% acid?
Solution
In solution 1 acid percent=10
In solution 2 acid percent=30
In the resulting mixture acid percent=25%
By applying the principle of allegations we have
=(30-25)/(25-10)
=5/15
=1:3
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