Answer in simplest form -4/15 + 1/6 =

One-third of the people from country a claim that they are from country b, and the rest admit they are from country a. one-fourth of the people from country claim that they are from country a, and the rest admit they are from country b. in a combined census of the two countries, one-half of the total claimed to be from a. what is the ratio of the populations of country a to that of country b.

The sum of two numbers is 86, and their difference is 20. find the two numbers

Which of the choices shown could be used to prove that aacp=abcp ?