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ciarrap552
16.03.2020 •
Mathematics
After taking 5 quizzes, your average is 76 out of 100. What must your average score be on the next five quizzes to increase your average to 81?
A. 78
B. 87
C. 83
D. 86
Solved
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Ответ:
Option D
86
Step-by-step explanation:
When your expectation is average of 81 for a total of 10 questions, your total score is 10*81=810
Currently, for 5 questions with an average of 76, your total score is 5*76=380
Difference between total expected score and current score is 810-380=430
Average of difference with 5 questions is 430/5= 86
Ответ:
* drumroll please*
4(10+16)
I hope that helps mi amor! ❤️