Question

To reduce 32 grams of a 25% antiseptic solution to a 10% solution, how much distilled water should a pharmacist add?

Answer 1

48 grams

Explanation:

= 32 + 25 because 32 grams and 25 %

= 57 - 10 because there's 10%

= 47 + 1 because 10 ÷ 10 = 1

= 48

My teacher taught me it this way!☺

Answer 2

Hello,


8 grams is 10% of (8g)/0.10=80 grams
80 grams-32 grams=48 grams
ANSWER: You should add 48 grams of water to 32 grams of 25% solution to make a 10% solution.