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19 Dec 2019, 04:31
Kudos
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D
Be sure to select an answer first to save it in the Error Log before revealing the correct answer (OA)!
Difficulty:
35%
(medium)
Question Stats:
71% (02:02) correct
29%
(01:59)
wrong
based on 147
sessions
History
Date
Time
Result
Not Attempted Yet
Torry has submitted 2/5 of his homework assignments, and he received an average grade of 75 for those assignments. If he wishes to receive an average grade of 90 for all his homework assignments, the average grade for Torry's remaining homework assignments must be what percent greater than the average grade for the assignments he has already submitted?
A. 15%
B. 20%
C. 25%
D. 33 1/3%
E. 40%
A. 15%
B. 20%
C. 25%
D. 33 1/3%
E. 40%
19 Dec 2019, 11:15
Kudos
Bookmarks
total assignments = 5
so for 2 assignments he has received = 150 points
and for all wishes ; 90*5 ; 450 points
he is short of = 300 points
i.e avg score per assigment required = 100 points
i.e 100-75/75 = 25/75 = 1/3 ; 33 1/3%
IMO D
so for 2 assignments he has received = 150 points
and for all wishes ; 90*5 ; 450 points
he is short of = 300 points
i.e avg score per assigment required = 100 points
i.e 100-75/75 = 25/75 = 1/3 ; 33 1/3%
IMO D
Bunuel
Torry has submitted 2/5 of his homework assignments, and he received an average grade of 75 for those assignments. If he wishes to receive an average grade of 90 for all his homework assignments, the average grade for Torry's remaining homework assignments must be what percent greater than the average grade for the assignments he has already submitted?
A. 15%
B. 20%
C. 25%
D. 33 1/3%
E. 40%
A. 15%
B. 20%
C. 25%
D. 33 1/3%
E. 40%
19 Dec 2019, 17:29
Kudos
Bookmarks
I would go for D.
Total assignment=5
Average in first 2= 75 i.e. 150 total
Expected average in 5= 90 i.e. 450 total.
So, 300 (450-150) needed from remaining 3. i,.e 100 points each.
so, 25 more points needed. Thus, 25/75=33.33% more points needed on an average.
Total assignment=5
Average in first 2= 75 i.e. 150 total
Expected average in 5= 90 i.e. 450 total.
So, 300 (450-150) needed from remaining 3. i,.e 100 points each.
so, 25 more points needed. Thus, 25/75=33.33% more points needed on an average.
