rheisf
2021-12-27
kalfswors0m
Beginner2021-12-28Added 24 answers
Given: Math test scores are 68,78,90 and 91.
To find: The next lowest score on the next test and still achieve an average of at least 85.
Solution:
Average marks is given by formula:
Let marks scored in next be x.
Total number of test including next will be 5.
Therefore,
Hence, least marks required to achieve average marks of 85 is 98.
Gerald Lopez
Beginner2021-12-29Added 29 answers
karton
Expert2022-01-05Added 613 answers
a) Let us assume that the lowest score I can earn is x on the next test and still achieve an average of at least 85.
b) So my average score is
c) so,
d)
e) The lowest score I can earn is 98 on the next test and still achieve an average of at least 85.
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