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14-02-2021
Mathematics

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Jacob scored 85%, 90%, and 74% on his first three tests. Then he scored 99%, 84% and 75% on his next three
tests. What is the difference in the average of the first three tests compared to the last three tests?

Respuesta :

14-02-2021

The average of the first three is 83 (85 + 90 + 74)/3
The average of the next 3 is 86.

The difference is 3

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