Question

23. A solution was diluted 1/20 and the final concentration was 30%. What was the original concentration?

A. 150%

B. 100%

C. 60%

D. 600%

Answer 1

D

Step-by-step explanation:

1/20 is the dilution factor

30%is the final conc

let o be the original conc

o × 1/20=30%

o=(20×30)%

o=600%