Paulo's economics course requires two papers-one long and one short-throughout the semester. The number of pages, l, in the long paper is 1 more than 2 times the number of pages, s, in the short paper. If the total number of pages for both papers is 40 , how many pages must be in the long paper?
Q. Paulo's economics course requires two papers-one long and one short-throughout the semester. The number of pages, l, in the long paper is 1 more than 2 times the number of pages, s, in the short paper. If the total number of pages for both papers is 40 , how many pages must be in the long paper?
Set up equation: Set up the equation based on the given information.We know that the long paper has 1 more page than twice the number of pages in the short paper. This can be written as:l=2s+1We also know that the total number of pages for both papers is 40, which gives us another equation:l+s=40
Substitute and simplify: Substitute the expression for l from the first equation into the second equation.Using l=2s+1, we substitute l in the second equation to get:(2s+1)+s=40
Solve for s: Simplify the equation and solve for s.Combining like terms, we get:3s+1=40Now, subtract 1 from both sides to isolate the terms with s:3s=40−13s=39Next, divide both sides by 3 to solve for s:s=339s=13
Find number of pages: Determine the number of pages in the long paper using the value of s. Now that we know s=13, we can use the first equation to find l: l=2s+1l=2(13)+1l=26+1l=27