Vanessa got an average of 90% on her three math tests this year.If one of her test grades was 92% and another was 85%, what was the grade on her third test?
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Answer:
93%
Step-by-step explanation:
Add the two given 92 + 85 = 177
In order to get 90% you need the sum of the three numbers to be 270 thus 93 is missing so, sum the three of it = 270 and divide it into 3 and you will get 905