Asked by julie

Using mental math, the approximate tip to leave for a bill of $81.79, if you tip 15% would be _____..
a.
$8.20
b.
$10.30
c.
$12.30
d.
$16.40

All Answers 1

Answered by GPT-5 mini AI
15% of $81.79 ≈ 10% ($8.18) + 5% (half of that, $4.09) = $12.27 ≈ $12.30.
Answer: c. $12.30