Type 4 - Find the quantity of base or vehicle
9. Altering Product Strength 9.2) Alligation 9.2.1) Alligation
9.2.1.1) Alligation Normal 1
Total tried: Correct: Wrong:
You want to prepare 15% of an ointment. You have some ointment base or vehicle and 1180 g of 45% ointment. Calculate how many grams of base you need to mix with the 45% ointment in order to compound the product.
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lb equals 2360 g kg
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Tic-tac-toe, Short form:
`[[45 % (1180 \quad g),\quad\quad\quad\quad, 15 pt],[\quad\quad\quad\quad,15 % , \quad\quad\quad\quad],[0 % (? g),\quad\quad\quad\quad,30 pt]]`
Therefore, 30 parts of the ointment base should be mixed with 15 parts of the ointment having a concentration of 45 % and the weight of 1180 grams.
`(1180 \quad g)/(15 \quad parts)=x/(30 \quad parts) \quad therefore x = 2360 \quad g`. Ans.