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OlgaM077 [116]
3 years ago
10

Three guys split the cost of $30. They each kick in $10. The manager tells the clerk the room is only $25. He hands five $1 bill

s to the clerk and tells him to refund the money. The bell hop says to himself, "No way can three guys split $5, I'm going to help out." He stuffs $2 in his pocket, knocks on the door, gives each guy back a buck. So now each guy has paid $9. $9 times 3 is $27 plus $2 the bell hop stole--only $29! Where is the other buck?
Mathematics
1 answer:
Mamont248 [21]3 years ago
3 0

The bell hop took 2 bucks, gave them back three bucks, that's 5 bucks total. 30 minus 5 is 5. What your doing wrong is your adding the sums up when you should be subtracting. 27 minus 2 bucks is 25.

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\rule{200}{4}

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<em>D</em><em>e</em><em>r</em><em>i</em><em>v</em><em>a</em><em>t</em><em>i</em><em>o</em><em>n</em><em> </em><em>o</em><em>f</em><em> </em><em>c</em><em>o</em><em>s</em><em>²</em><em>x</em><em> </em><em>-</em><em> </em><em>s</em><em>i</em><em>n</em><em>²</em><em>x</em><em> </em><em>=</em><em> </em><em>c</em><em>o</em><em>s</em><em>2</em><em>x</em><em> </em><em>:</em><em>-</em>

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\rule{200}{4}

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