Teds last 3 test scores were 82 91 88 what is the average of his test scores

The average of his test scores is 87%.
To find the average of a group of numbers, you have to add all the numbers up, and divide the total by how many numbers you added together.

Teds average is 87%. To find the average you must add up all the numbers, and then divide them by the number of numbers there are lol. Hope this helps! <3

1. isolate the variable, in this case, d. subtract 35.5 on both sides of the equation.2. 52 subtracted by 35.5 is 16.53. therefore your answer would be d= 16.5this is the basics of pre algebra, isolating variable through adding, subtracting, multiplying, and dividing, if you have any other questions to ask just comment!