Thursday, April 2, 2015

Test Yourself: Are You Being Tricked by Intuition?



Not that tough. Think!

8 comments:

  1. I got the third one 100% right. I messed up the second one and made a bad assumption in the first.

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  2. The first one still doesn't make any sense to me.

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  3. x = cost of ball
    cost of bat = x + 1
    total cost = 1.10 = x + (x + 1) = 2x + 1
    2x = 0.10
    x = 0.05

    So the ball cost 0.05, the bat costs 1 dollar more than the ball, 1.05, and the total is 1.05 + .05 = 1.10

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    Replies
    1. 1.10 = 2x + 1
      (subtract 1 from both sides of the equation)
      0.10 = 2x
      (divide both sides by 2)
      0.05 = x

      Delete
  4. # for 3!!
    Thanks for the coaching, boss, THIMK!!!

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  5. Yes. Easy if one doesn't leap to any conclusions. Understand the question before the answer.

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  6. Woo apparently not, 3 out of 3!

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