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| Thread ID: 48806 | 2004-09-01 11:44:00 | Off Topic - Puzzle | Sherilee (4441) | Press F1 |
| Post ID | Timestamp | Content | User | ||
| 268019 | 2004-09-01 11:44:00 | How about this puzzle 3 students buy a packet of cereal for $6.00. The person realises she has overcharged them by a $1.00 but as you can't divide a $1 by 3 she gives them 20c each and pockets the 40c So each student has paid $1.80 she has 40c thats only $5.80 Wheres the other 20cents????????? They paid $1.80 each 20cents back from their original $2 3x$1.80 = $5.40 + the 40cents she nicked = $5.80 where is the other 20cents?? |
Sherilee (4441) | ||
| 268020 | 2004-09-01 11:50:00 | You're looking at it the wrong way around :) the extra 40c takes it from $5 to $5.40, plus the 20c each student got back (60c) takes it to $6. Make sense? They got back 20c each = 60c, plus the 40c she pocketed = $1... $6 - $1 = $5 that should have been charged. Mike. |
Mike (15) | ||
| 268021 | 2004-09-01 11:56:00 | What if you look at it this way they paid $1.80 each and got .20c back and she has .40c. they paid $1.80 x 3 = $5.40 change .20c x 3 = .60c Total = $6.00 Where the hell did the .40cents come from? |
Rob99 (151) | ||
| 268022 | 2004-09-01 11:57:00 | Hi Sherilee The three students have paid $1.80 each and the shopkeeper has $5.40 so there is nothing missing. The shopkeeper has the $5 purchase price plus the 40c overcharge makes $5.40, each student has 20c each x 3 = 60c, add the 60c and the $5.40 and there's your $6. Alternatively, out of the $6, the shopkeeper has $6 - 60c = $5.40 and each student has 20c x 3 = $6 again. You can't add the $5.40 and the 40c - because you have counted the 40c twice (it's in the $5.40 already) and the 3 refunds of 20c have not been counted. :D |
andrew93 (249) | ||
| 268023 | 2004-09-01 11:57:00 | > Where the hell did the .40cents come from? The 40c is the difference between what they paid ($5.40) and what they should have been charged ($5.00), so she pocketed the 40c. Mike. |
Mike (15) | ||
| 268024 | 2004-09-01 19:17:00 | each student paid $2 each student got 20c back therefore each student paid $1.80 3 x $1.80 = $5.40 The cereal only cost $5 $5.40 - $5 = 40c (which is what the person kept) |
sam m (517) | ||
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