Average = sum / total number
total game bowled by laura = 5
first 4 scores are 83, 131, 100, and 147
Let x be the fifth score
The average score = 122.2
Since average = sum / total number
122.2 = 83 + 131 + 100 + 147 + x / 5
introducting cross multiplibcation
122.2 x 5 = 83 + 131 + 100 + 147 + x
611 = 461 + x
let isolate x by collecting the like terms
x = 611 - 461
x = 150
The least score to have an average of 122.2 is 150
Therefore, the answer is 150 for the fifth score
