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Smokey's Smokes (Posted on 2010-06-03) Difficulty: 1 of 5
A store sells three brands of cigarettes: $3.15 Star lights, $4.30 Vegas slims, and $5.20 Royal 100's. (Tax included) A man named Smokey walks into the store, and buys 2 packs of cigarettes, one pack for himself and the other pack for a friend. He hands the cashier a $20 note, and is returned a few bills and 3 coins in change (exclude dollars or half dollars). What's the probability, that the man smokes Royal 100's?

No Solution Yet Submitted by John zadeh    
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Solution The white (the right) smoke | Comment 1 of 6

 

 

Ans:  ZERO  PROBABILITY 

 solution :

 

3.15+5.2=8.35   20-8.35=11.65  no way  in 3coins

4.3+5.2=9.5     20-9.5=10.5  no way  in 3coins

3.15+4.3=7.45 change  20-7.45=12.55      ok in 3coins:   25+25+5=55  - without  Royal

  

 


  Posted by Ady TZIDON on 2010-06-03 12:08:38
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