Question 1202464
m, amount of money
w, number of words
k, variation constant


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 amount of money that a magazine pays for an article varies directly as the number of words in the article.
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{{{m=kw}}}


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If the magazine pays $720 for a 1200-word article, how much will be paid for an article of 1500 words?
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Enough information to answer the question.
Also you can start with the article's word count and use the pay rate to solve for the amount of pay.   Unit Conversion!

{{{1500*words*(720/1200)(dollars/words)}}}