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Sophia has averaged 13% lower in 5 of a course's tests, compared to the first two she took. by approximately what percent did her grade go down as a result of those 5 lower-scoring tests?

 

5star rating if u answer it correctly.smiley

 Nov 29, 2016
 #1
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Please ?

 Nov 29, 2016
 #2
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Say she scored  50 % on the first two exams    that would   50   and 50

she scored 13% lower on the next 5            that would be    37  and 37  and 37 and 37 and 37

 

Add all of her scores and divide by the number of scores to find her NEW average

 

(50+50 + 37 + 37 + 37 +37 + 37 ) / 7    = 40.71      

She HAD a 50% average, now it has gone DOWN  to 40.71 %    Down  9.28% points.

 Nov 29, 2016
edited by ElectricPavlov  Nov 29, 2016

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