Could you help me with this question? please ⁉️ Over 20 years, the population of a town decreased
by 275 people to a population of 850. Write and
solve an equation to find the original population.

Justify your work/how did you do it?

How many liters of peroxide should be added to 12 liters of an 8% peroxide solution so that the resulting solution contains 16% peroxide?   original added new amount of peroxide 0.96 liters x 0.96 + x amount of solution 12 liters x 12 + x 0.18 liter 1.14 liters 1.92 liters 2.10 liters