Problema Solution
How many liters of peroxide should be added to 12 liters of an 8% peroxide solution so that the remaining solution contains 16% peroxide?
Answer provided by our tutors
let 'x' represent the amount of peroxide that should be added, assumed to be pure peroxide, hence 'x+12' represents the remaining solution
percentages, 8% and 16%, are expressed as decimals, 0.08 and 0.16
the remaining solution is calculated based on these ratios:
0.16(x+12)= x + 0.08*12
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x=1.1428
So approximately 1.143 liters of pure peroxide must be added.