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A group of 100 people, some students and some faculty, attended a museum opening. Each student paid $10 per person for entrance to the museum and each of the faculty paid $25 per person for entrance. If the total paid, for all 100 people, was $1300, how many students attended the museum opening?

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yoco63

                                             
STUDENTS               X              10               

FACULTY           100-X              25


                                   10X + 25(100-X) = 1300

                                    10X + 2500 -25X = 1300

                                    10X - 25X = -2500 + 1300

                                             -15X = -1200

                                               15X = 1200

                                                    X = 1200/15

                                                    X = 80 STUDENTS <--------SOLUTION

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