Answer:
3N + 25M + P ≤ 45
Explanation:
Let the number of Newspaper Stories taken=N
Newspaper stories take 3 hours to write.
Total Hour spent on Newspaper Stories=3N
Let the number of Magazine Articles taken =M
Magazine articles take much longer to write 25 hours per article.
Total Hour spent in Magazine Articles=25M
Let the number of Proofreading jobs taken =P
Proofreading pays for every 1 hour
Total Hour spent in Proofreading jobs=P
Since both newspaper stories and magazine articles must be completed in the week they are started.
The writer doesn't want to work more than 45 hours per week. So his total hour in a week is less than or equal to 45.
The Constraint that limits the amount of time the writer will work in a week is given as:
3N + 25M + P ≤ 45