Answer:
The mistake is evidently in the addition of the first 5 bowling scores
Step-by-step explanation:
Brenda had bowling scores 92, 110, 85, 78, and 96.
She needs one more bowl to get an average of 96.
Let the last bowl score = x
(92 + 110 + 85 + 78 + 96 + x)/6 = 96
(92 + 110 + 85 + 78 + 96 + x) = 96×6 = 576
461 + x = 576
x = 576 - 461 = 115
The mistake is evidently in the addition of the first 5 bowling scores, the score for the 5th bowl was excluded, maybe because it was coincidentally 96 too.
She added (92 + 110 + 85 + 78) instead of (92 + 110 + 85 + 78 + 96), so, the score needed for the last bowl to get an average of 96 is actually 115, not 211.
Hope this Helps!!!
