Pharmacist

The pharmacist had a 12 liters vessel herbal lotion, which contained a 30% active ingredient. Her assistant poured 18 liters of herbal lotion containing 45% of the active ingredient into a container. What percentage of herbal lotion was produced?

Correct answer:

p =  39 %

Step-by-step explanation:

V1=12 l p1=30%=10030=0.3  V2=18 l p2=45%=10045=0.45  p=100 V1+V2p1 V1+p2 V2=100 V1+V2103 V1+209 V2=100 12+180.3 12+0.45 18=39%



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