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The arithmetic mean of six grades is 87. If the lowest grade is dropped, the mean is 89. What is the lowest grade?

Apr 6, 2020

#1
+932
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If the mean is 87, that means the sum of the grades is 6*87= 522. If the lowest grade is dropped that leaves 5 grades with an averagve of 89. SO the sum of those 5 is 5*89= 445. To find the grade subtracted, you find the difference of theses sums which is 522-445= 77 which is your answer.

Hope it helps!

Apr 6, 2020
#2
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Btw how many questions will you be asking?

Apr 6, 2020
#4
+384
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do u not want me to ask questions

I just need help I'm not asking u to do homework

I have tried these problems before and I got the wrong answer that why I ask questions for help

so pls understand

Paresh  Apr 6, 2020
edited by Paresh  Apr 6, 2020
#5
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No I didn't mean that, I just noticed a bunch of questions from the same user that's all.

HELPMEEEEEEEEEEEEE  Apr 6, 2020
#6
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oh ok its also my fault I will be more sensible

Paresh  Apr 6, 2020
#3
+124707
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If  the   mean  of  the six grades  is  87, there were  6 * 87  =   522 total points

If  the mean of  6 grades  is 89, there were a total  of  455 points

Then  the  dropped grade  must  have been    522 - 455  =  77

Apr 6, 2020