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Sitting on the Fence (Posted on 2013-08-13) Difficulty: 3 of 5
Ann has a choice of two babysitting payment options:
  1. She can accept a flat rate of $15 for a night's work, or:
  2. She can choose two of six sealed envelopes containing $1, $1, $5, $5, $10 and a $20 bill.
(For example, the second option could leave Ann with as little as $2 or as much as $30 for a night's work.)

Assuming that Ann will have to babysit for a very long period of time, which is the better payment option for her?

No Solution Yet Submitted by K Sengupta    
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What's the problem? Comment 5 of 5 |
I think this problem is a difficulty 1.  I just took the total of the 6 envelopes and divided by 3 to arrive at $14, which is not as good as $15.

If you prefer, make believe that Ann works 3 nights, and gets all of the 6 envelopes over the course of 3 nights.  Then the comparison is between $42 and $45.

  Posted by Steve Herman on 2013-08-14 00:05:22
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