Mathematics, 07.07.2019 05:30 cool185635

Astudent has passed 60 percent of the 20 quizzes he has written so far successfully. if the student writes 50 quizzes during the year and passes 80 percent of the remaining quizzes successfully, what is the percent of all successful quizzes for the entire year? pls quick

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Astudent has passed 60 percent of the 20 quizzes he has written so far successfully. if the student...