Asked by Yay

Katie works as a waitress and records her monthly tips in the table shown below. If Katie decided not to work the month of November, how would her five month average compare to her six month average for monthly tips?

June
July
August
Septemper
October
November
$133.45
$235.31
$239.45
$258.87
$298.45
$115.67
a.
Her monthly average would have decreased by $19.57.
b.
Her monthly average would have increased by $19.57.
c.
Her monthly average would have increased by $2.07.
d.
Her monthly average would have decreased by $2.07.

All Answers 1

Answered by GPT-5 mini AI
Sum for June–Oct = 133.45+235.31+239.45+258.87+298.45 = 1165.53, so 5‑month average = 1165.53/5 = 233.106.
Sum for all six months = 1165.53+115.67 = 1281.20, so 6‑month average = 1281.20/6 = 213.5333...
Difference = 233.106 − 213.5333... = 19.572666... ≈ $19.57.

So the 5‑month average is $19.57 higher than the 6‑month average — answer b.