Find the lateral surface of the rectangular prism in centimeters

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.

At a sale this week, a desk is being sold for $213. this is a 29% discount from the original price. what is the original price?

If on=8x-8,lm=7x+4,nm=x-5,and ol=3y-6