Angela math test scores so far are as follows: 87, 96, 82, 77. What score must Angela make on the final test in order to have a test average of 88?

3 Answers

Let #x# be the score of the final test then

#(87+96+82+77+x)/5=88=>x=98#

Sep 16, 2015

Answer:

I found #98#

Explanation:

Considering an average of #n# scores:

#(Sigma"scores")/n=(87+96+82+77+x)/5=88#
you get:
#342+x=5xx88#
#x=440-342=98#

Sep 16, 2015

Answer:

Angela must score 98 in her final test.

Explanation:

Let #x# represent the score that Angela gets on her final test.

The average of all 5 of the tests can be found by computing,

#bar x=(87+96+82+77+x)/5=88#

from this we just use algebra and solve for #x#.

#(342+x)/5=88#
#x=(88xx5)-342#
#x=98#

Hope it helps :)