.
The amount of money that a magazine pays for an article varies directly
as the number of words in the article. If the magazine pays $720 for a 1200-word article,
how much will be paid for an article of 1500 words?
~~~~~~~~~~~~~~~~~~~
Write a proportion
= = .
From this proportion, find x = = = 180*5 = 900 dollars. ANSWER
Solved.
Notice that the proportion says that the ratio
remains the same (remains constant), exactly as the problem states.
----------------
For introductory lessons on proportions, see the lessons
- Proportions
- Using proportions to solve word problems
- Typical problems on proportions
- Using proportions to estimate the number of fish in a lake
- HOW TO algebraize and solve these problems using proportions
in this site.
Learn the entire subject from there.
Happy learning ( ! )