SOLUTION: for five geometry examinations i have an average of 88 what must i score on the sixth test to get a 90

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Question 619541: for five geometry examinations i have an average of 88 what must i score on the sixth test to get a 90
Answer by killer6678(69) About Me  (Show Source):
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5*88= 440
(number of examinations) * (points achieved)
90*6= 540 points
(score needed) * (number of tests)
Subtract
540-440= 100
Therefore he/she must achieve a score of 100% to get an average of 90%