CPM Homework Help : CC3 Problem 1-37

Latisha earned an $85\%$ today. Her previous scores were $72\%$ , $89\%$ , and $90\%$ . Calculate her new average (mean).

Hint 1:

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

Hint 2:

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

Answer:

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