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Mathematics 9 Online
OpenStudy (anonymous):

Please help? Tue’s math teacher gave 20 four-question pop-quizzes throughout the first semester. Tue remembered that she scored either 75% or 100% on all of the quizzes. If her average quiz grade for the semester is 90%, how many of each score did she earn?

OpenStudy (goten77):

wow im trying to find some way to do this but.... XD its like hard... i could do it the long way using sequences and series but that b kinda long.....

OpenStudy (goten77):

aaah i just think i got it

OpenStudy (goten77):

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