3 ppl were at a restaurant the bill was $30 the waiter overcharged them the bill was only 25 he didn't no how to split it equally so he gave them a dollar back an pocketed the rest 9 * 3 = 27+2=29 where is the other dollar

No dollar is lost

Explanation:

The riddle portrays that in this sense, each guest paid $9 then waiter didn't know how to spit $2

3*9+2=$29

This sum is wrong since each person wan't charged $9

In the real sense, the guests were charges

$25 as in the bill presented

$1 each inside the guests pockets hence 3*1=$3

$2 retained by water

Total=25+3+2=30

Therefore, all money can be accounted for, there's no one dollar lost