Question 389315
IF Freddy received an 83, 76, 70, 86,and 68 on his first 5 math test; what grade does he need to get pn the sixth test to make his average exactly 80
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Total scores of 5 math tests = 403
assume he has to get x

average = 80 
(403+x)/6 =80
multiply by 6
403 +x = 480
-403  
x=480-403
x=77
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m.ananth@hotmail.ca