To find the average, add the scores and divide the sum by how many scores you are adding: 81 + 76 + 91 + 73 + 79 = 400 ÷ 5 = 80.
82
The answer is 81. Simply add the three test scores and divide by three.
(81 + 77 + 83 + 75 + X) divided by 5 = 80 average 316 + X = 400 X = 84
84
Average of three test scores is 84 can be written (x+y+z)/3=84. If you know two of the scores then (79+93+z)/3=84, so to solve for z, 79+93+z=84*3 z=252-79-93 z=80 The first test score was 80
The LCM is 2268.
81 and 84 both go into 6804. The LCM is 2268.
3x-84 = -81
group
He was 84
81 84 87