Quote:
Originally Posted by AMERICUS
BUT 3 * 9 = 27 + 2 = 29...
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Like mentioned before it's more a trick than broken math. The story suggests your equation above, but that equation doesn't need to be solved. Another way to tell that this equation doesn't need to work is to split it up to its single values:
27 + 2 = 29
(25 + 2) + 2 = 29
In the last line you see that you factor the 2 $ tip in twice. Why would a equation containing the 2 $ tip twice need to make sense? It doesn't need to. Hope this helps.
Quote:
Originally Posted by E90 87ss
Each pay $10 = $30
Their change is $5
All three pay $25 or the cost of the room, 25/3 = $8.33 per person...
They each receive a dollar back, so $9.33 per person...
9.33x3= 27.99 and they leave a $2 dollar tip, so $29.999999999999999...
What's the lol about???
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Yep, another way to come to the same conclusion, just backwards calculated.
Best regards,
south