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OpenStudy (anonymous):
Vinh needs 420 points to have a B average in Math. His scores so far are 88, 89, 79, and 77. What is the minimum score he can make on the next test to maintain the B?
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OpenStudy (anonymous):
Do you know how to take out averages?
OpenStudy (anonymous):
yes
OpenStudy (anonymous):
Then what exctly is your doubt here?
OpenStudy (anonymous):
ill do it myself then
OpenStudy (anonymous):
Here, Sum of scores so far + unknown score/5 is greater than or equal to 420 ..
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OpenStudy (anonymous):
thank you(:
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