Posted by Mimi on Monday, March 21, 2011 at 10:15pm.
A student earned scores of 85, 83, 90, 94, 88 and 84 on the first six tests in a biology class. What score is needed on the seventh test to produce an 86 average?

Math  Damon, Monday, March 21, 2011 at 10:38pm
(85+83+90+94+88+84+x)/7 = 86

Math  Mimi, Monday, March 21, 2011 at 10:43pm
Do I add them together, have the answer and then divide by 7 ?

Math  Damon, Monday, March 21, 2011 at 10:48pm
ok here
(524+x)/7 = 86
524+x = 602
x = 78

Math  Mimi, Monday, March 21, 2011 at 10:56pm
Thank you.
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