Quote:
|
Originally Posted by sperry
$9 x 3 + $2 = $29. No logic error there.
|
There is the error.
They paid $9 after the change.
$9 x 3 = $27 (after tip)
but, there was $2 dollar tip, so you need to subtract it, not add it to get the total they paid after the change and before the tip.
$9 x 3
- $2 = $25 (after change and before tip).
$9 x 3
- $2 + $5 change = $30 (before change and before tip. or, how much they paid the guy at the desk)