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OpenStudy (anonymous):
Mary gets a 90 in all of her classes except history in which she gets a 95. if her average grade is 91 how many grade does she receive??
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OpenStudy (anonymous):
5 grades. 4 - 90s, 1 95.
OpenStudy (anonymous):
95*90x/x = 91
OpenStudy (anonymous):
so is 5 grade?
OpenStudy (anonymous):
Yes. She received 5 grades.
OpenStudy (anonymous):
ok thx
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