Chapter 7. Alligation Methods (1 of 21) Sample Questions

1. What is the final percentage of ZnO ointment made by mixing ZnO ointment of the following strengths: 200 gram of 10% + 50 gram of 20 % +100 gram of 5%
  1. A. 35%
  2. B. 10%
  3. C. 3.5%
  4. D. 11.67%
Ans: B
Solution:
+200 * 10% = 20 g +
+50 * 20% = 10 g +
+100 * 5% = 5 g +
Now, we have 350 gram of the ointment which contain 35 grams of ZnO
therefore, the percentage is 35/350=10%