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OpenStudy (anonymous):
Julie is a math tutor in the academic center. She charges $210 for the first 7 hours of tutoring and $20 for each additional hour of tutoring. If she earned $410 tutoring 1 student, how many total hours did she spent tutoring the student?
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OpenStudy (anonymous):
17
OpenStudy (anonymous):
She spent seventeen hours. 410-210 is 200, 200/20 i s 10. 10+7=17.
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