Question

On her first five math test , Donna scored 85,77,73,91, and 86. What is the lowest score she can earn on her sixth test and still have an average of 85 or greater

Answer 1

The lowest score Donna can earn on her sixth test and still have an average of 85 or greater is 138.

Step-by-step explanation:

In order to find the lowest score Donna can earn on her sixth test and still have an average of 85 or greater, we need to determine the total sum of her first five test scores. Then, we can subtract that sum from the desired average multiplied by six to find the lowest possible score.

1. Calculate the sum of Donna's first five test scores: 85 + 77 + 73 + 91 + 86 = 412
2. Subtract the sum from the desired average multiplied by six: 85 * 6 - 412 = 138

Therefore, the lowest score Donna can earn on her sixth test and still have an average of 85 or greater is 138.