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1-28.

Latisha earned an 85% today. Her previous scores were 72%, 89%, and 90%. Calculate her new average. Homework Help ✎

Try not to be confused by the fact that the test scores are given in percentages. Treat them as you would any other values.

Calculate the average by dividng the sum of all the scores by the number of tests.

$\text{Average }= \frac{(72+89+90+85)}{4}=84\%$