Question 305607
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You can only do this problem if you assume that there are no students who take both algebra and geometry at the same time.  And you must assume that no one is taking trigonometry, analytic geometry, calculus, linear algebra, or any other mathematics subjects.


Let *[tex \Large x] represent the number of students in the school.  Always a good strategy to start out defining the variable as the thing you are asked for.


Now:  [All of the students] is equal to [One-fourth of the students] plus [One-fifth of the students] plus the number of students not taking math (110).


*[tex \LARGE \ \ \ \ \ \ \ \ \ \ x\ =\ \left(\frac{x}{4}\ +\ \frac{x}{5}\right)\ +\ 110]


All you have to do now is solve for *[tex \Large x]


John
*[tex \LARGE e^{i\pi} + 1 = 0]
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