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Three short math questions.

Topic closed. 10 replies. Last post 4 years ago by RL-RANDOMLOGIC.

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Zeta Reticuli Star System
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Posted: June 19, 2013, 12:55 am - IP Logged

From the book Investing The Last Liberal Art by Robert G. Hagstrom.

A bat and a ball cost $1.10 The bat cost a dollar more than the ball.

How much does the ball cost?

Chances are excellent that your answer is wrong. Don't despair- over half the students at Harvard, MIT, and Princeton got it wrong, too. And they didn't do any better on the next two problems.

If it takes 5 machines 5 minutes to make 5 widgets, how long would it take 100 machines to make 100 widgets?

In a lake, there is a patch of lily pads. Every day the patch doubles in size. If it takes 48 days for the patch to cover the entire lake, how long will it take for the patch to cover half the lake?

Those who run the lotteries love it when players look for consistency in something that's designed not to have any.

Lep

There is one and only one 'proven' system, and that is to book the action. No matter the game, let the players pick their own losers.

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    Kentucky
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    Posted: June 19, 2013, 2:11 am - IP Logged

    From the book Investing The Last Liberal Art by Robert G. Hagstrom.

    A bat and a ball cost $1.10 The bat cost a dollar more than the ball.

    How much does the ball cost?

    Chances are excellent that your answer is wrong. Don't despair- over half the students at Harvard, MIT, and Princeton got it wrong, too. And they didn't do any better on the next two problems.

    If it takes 5 machines 5 minutes to make 5 widgets, how long would it take 100 machines to make 100 widgets?

    In a lake, there is a patch of lily pads. Every day the patch doubles in size. If it takes 48 days for the patch to cover the entire lake, how long will it take for the patch to cover half the lake?

    Do I get a consolation prize for guessing five minutes for the second question and passing on the other two?

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      Florida
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      Posted: June 19, 2013, 2:24 am - IP Logged

      I had to think about it a minute but this is what I came up with

      First one maybe  1.05  for the bat  and  .05  ( 5 cents ) for the ball //

      Second one, I also see 5 minutes .

      Third one - 47 Days 

       

      CG

        RJOh's avatar - chipmunk
        mid-Ohio
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        Posted: June 19, 2013, 2:41 am - IP Logged

        Do I get a consolation prize for guessing five minutes for the second question and passing on the other two?

        If you want a prize use your math to figure out something useful like the next winning PB numbers.

         * you don't need to buy more tickets, just buy a winning ticket * 
           
                     Evil Looking       

          Coin Toss's avatar - shape barbed.jpg
          Zeta Reticuli Star System
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          Posted: June 19, 2013, 10:20 am - IP Logged

          I had to think about it a minute but this is what I came up with

          First one maybe  1.05  for the bat  and  .05  ( 5 cents ) for the ball //

          Second one, I also see 5 minutes .

          Third one - 47 Days 

           

          CG

          Right on all three, CarliG.

          Stack47,

          Consolation prize,

          Go with the orange colored balls in your state's Pick 5.

          Those who run the lotteries love it when players look for consistency in something that's designed not to have any.

          Lep

          There is one and only one 'proven' system, and that is to book the action. No matter the game, let the players pick their own losers.

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            Krypton
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            Posted: June 19, 2013, 12:19 pm - IP Logged

            From the book Investing The Last Liberal Art by Robert G. Hagstrom.

            A bat and a ball cost $1.10 The bat cost a dollar more than the ball.

            How much does the ball cost?

            Chances are excellent that your answer is wrong. Don't despair- over half the students at Harvard, MIT, and Princeton got it wrong, too. And they didn't do any better on the next two problems.

            If it takes 5 machines 5 minutes to make 5 widgets, how long would it take 100 machines to make 100 widgets?

            In a lake, there is a patch of lily pads. Every day the patch doubles in size. If it takes 48 days for the patch to cover the entire lake, how long will it take for the patch to cover half the lake?

            The bat costs $1.05 and the ball costs .05. That way the bat does cost $1 more than the ball.

             

            3rd grade - Liberty Street School. Middletown , NY

            Rocky Mount Sr High NC

            NC State BSEE. 

             

            Lol

              garyo1954's avatar - garyo
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              Posted: June 23, 2013, 5:03 pm - IP Logged

              From the book Investing The Last Liberal Art by Robert G. Hagstrom.

              A bat and a ball cost $1.10 The bat cost a dollar more than the ball.

              How much does the ball cost?

              Chances are excellent that your answer is wrong. Don't despair- over half the students at Harvard, MIT, and Princeton got it wrong, too. And they didn't do any better on the next two problems.

              If it takes 5 machines 5 minutes to make 5 widgets, how long would it take 100 machines to make 100 widgets?

              In a lake, there is a patch of lily pads. Every day the patch doubles in size. If it takes 48 days for the patch to cover the entire lake, how long will it take for the patch to cover half the lake?

              Nice one CT! My 2 cents wouldn't be worth a dime at this point. Big Smile

               

              Congrats CarliG! You publicly beated down a few MITters! Clown

              My greatest accomplishment is teaching cats about Vienna Sausage. When I need a friend, all I need do is walk outside, pop open a can, and every little critter in the neighborhood drops by to say "Hi!"

                savagegoose's avatar - ProfilePho
                adelaide sa
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                Posted: June 23, 2013, 5:49 pm - IP Logged

                its a long time since i did algebra,  ill give it a go

                 a=b+100

                110 = (b+100)+b

                so

                110-100= bx2

                10 = 2b

                5=b

                2014 = -1016; 2015= -1409; 2016  = -1171; 2017 = ?  TOT =  -3596

                keno historic = -2291 ; 2015= -603; 2016= -424; 2017 = ? TOT = - 3318

                  savagegoose's avatar - ProfilePho
                  adelaide sa
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                  Posted: June 23, 2013, 5:56 pm - IP Logged

                  it seems 1 machine would take 5 min to make 1 widget. so 10 machine  would be 5 min, and 100 machines would be 5 min. ther trick is a machine takes 5 min to make 1 widget

                  2014 = -1016; 2015= -1409; 2016  = -1171; 2017 = ?  TOT =  -3596

                  keno historic = -2291 ; 2015= -603; 2016= -424; 2017 = ? TOT = - 3318

                    savagegoose's avatar - ProfilePho
                    adelaide sa
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                    Posted: June 23, 2013, 5:58 pm - IP Logged

                    yeah 1 day to double the size, so 48 days minus 1, woykld be  mean 1 day to go till its fullly covered.

                    2014 = -1016; 2015= -1409; 2016  = -1171; 2017 = ?  TOT =  -3596

                    keno historic = -2291 ; 2015= -603; 2016= -424; 2017 = ? TOT = - 3318

                      RL-RANDOMLOGIC's avatar - usafce

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                      Posted: June 26, 2013, 8:25 am - IP Logged

                      From the book Investing The Last Liberal Art by Robert G. Hagstrom.

                      A bat and a ball cost $1.10 The bat cost a dollar more than the ball.

                      How much does the ball cost?

                      Chances are excellent that your answer is wrong. Don't despair- over half the students at Harvard, MIT, and Princeton got it wrong, too. And they didn't do any better on the next two problems.

                      If it takes 5 machines 5 minutes to make 5 widgets, how long would it take 100 machines to make 100 widgets?

                      In a lake, there is a patch of lily pads. Every day the patch doubles in size. If it takes 48 days for the patch to cover the entire lake, how long will it take for the patch to cover half the lake?

                      CT

                      .05

                      5 minutes

                      the last day the patches double so 48-1=47

                      RL

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