Pizza Math Riddle

[FXforex]

3 guys are at a hotel and order a pizza. Front desk says it will be $30, so each guy puts in $10. When it's delivered the pizza delivery guy says it is only $25, so he gives each guy back $1 and keeps $2 for a tip. If each guy got a dollar back, they only spent $9 each.

• $9 x 3 = $27
• Tip = $2
• $27 + $2 = $29

What happened to the other dollar?

 

[blah12345678]

The pizza was $8.33 per person, or $25 total.
Pizza + tip was $8.33 + .67 tip = $9

Total paid = $27 ($25 + $2 tip)

Another way:

25 + 3*1 = 28 (1 dollar given to back to each person)
28 + 2 tip = 30 ($.67 per person)

 

[kmgilroy89]

If he gives $1 back to everyone then he collects $27 overall, not $29. The $2 tip is included in that case since the price for the pie is only $25.