Question

to reduce 56 grams of a 70% antiseptic solution, to a 20% solution how much distilled water should a pharamasict add?

Answer 1

Answer:

140 grams

Step-by-step explanation

Let n be the amount of distilled water needed. Then:

.7(56)=.2(56+n)

39.2=11.2+.2n

.2n=28

n=140 gram distilled water

Answer 2

Answer:

140 gms

Step-by-step explanation:

Let n be the amount of distilled water needed. Then:

.7(56)=.2(56+n)

39.2=11.2+.2n

.2n=28

n=140 gm distilled water