Guess who thinks you can't do basic math?
The receipt at the right is from the British Bulldog, and it provides handy tip generator advice at the bottom.
The total is $35.68, and the tip advice seems to be skewed in the employees' favor. Consider:
Their math: $7.46
Real math: $4.95
Their math: $9.95
Real math: $6.60
Their math: $12.44
Real math: $8.25
Class, can you figure out what happened here?