Type 2 - Find the ratio using alligation concept

9. Altering Product Strength 9.2) Alligation 9.2.1) Alligation

9.2.1.1) Alligation Normal 1


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In what ratio should you mix 9% and 4.8% sources of an ointment in order to obtain a product with strength of 6.2%?


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lb equals 1 : 2 kg

    The alligation tic-tac-toe will have a structure like this:

    `[[9 %,\quad\quad\quad\quad, 1.4 pt],[\quad\quad\quad\quad,6.2 % , \quad\quad\quad\quad],[4.8 %,\quad\quad\quad\quad,2.8 pt]]`

    Therefore, 1.4 parts should be taken from the source of 9%, and 2.8 parts should be taken from the source of 4.8%.
    `therefore` the ratio will be `(1.4)/(2.8)` or `(1.4/1.4)/(2.8/1.4)` `=> 1` : `2`. Ans.