Ron Larson
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10.1 Health & Fitness

10.1 Health & Fitness
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  • 1. Calculating a Woman's Ideal Weight

    In 1983, Dr. J.D. Robinson published the following formula for ideal weight.

    Men:

    Women:

    Weight = 115 pounds + 4 pounds per inch over 5 feet

    Weight = 108 pounds + 3.75 pounds per inch over 5 feet

    Use the formula to find the ideal weight of a woman who is 5 feet 2 inches tall. (See Example 1.)

    • Worked-Out Solution

      Use the formula to find the woman's ideal weight.

      The woman's ideal weight is 115.5 pounds.

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      _____     _____    __   __   __   __   __   _   
 |__  //   |  ___||  \ \\/ //  \ \\/ // | || | || 
   / //    | ||__     \   //    \ ` //  | '--' || 
  / //__   | ||__     / . \\     | ||   | .--. || 
 /_____||  |_____||  /_//\_\\    |_||   |_|| |_|| 
 `-----`   `-----`   `-`  --`    `-`'   `-`  `-`
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    system user
    Ron Larson (author)1 decade ago |
    I know what you mean. The last time I was anywhere near my ideal weight, I was probably 16 years old.
    0
    system user
    Guest   1 decade ago |
    I guess I should be 7' 6".
    0
  • 2. Calculating a Man's Ideal Weight

    In 1983, Dr. J.D. Robinson published the following formula for ideal weight.

    Men:

    Women:

    Weight = 115 pounds + 4 pounds per inch over 5 feet

    Weight = 108 pounds + 3.75 pounds per inch over 5 feet

    Use the formula to find the ideal weight of a man who is 5 feet 3 inches tall. (See Example 1.)

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    __    __   _    _    ______      ___     _    _   
\ \\ / // | || | || |      \\   / _ \\  | || | || 
 \ \/ //  | || | || |  --  //  | / \ || | || | || 
  \  //   | \\_/ || |  --  \\  | \_/ || | \\_/ || 
   \//     \____//  |______//   \___//   \____//  
    `       `---`   `------`    `---`     `---`
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  • 3. Calculating a Man's Ideal Weight

    In 1983, Dr. J.D. Robinson published the following formula for ideal weight.

    Men:

    Women:

    Weight = 115 pounds + 4 pounds per inch over 5 feet

    Weight = 108 pounds + 3.75 pounds per inch over 5 feet

    Use the formula to find the ideal weight of a man who is 6 feet tall. (See Example 1.)

    • Worked-Out Solution

      Use the formula to find the man's ideal weight.

      The man's ideal weight is 163 pounds.

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     _    _      ___       _____     ___     _    _   
| || | ||   / _ \\    / ___//   / _ \\  | |  | || 
| || | ||  / //\ \\   \___ \\  | / \ || | |/\| || 
| \\_/ || |  ___  ||  /    //  | \_/ || |  /\  || 
 \____//  |_||  |_|| /____//    \___//  |_// \_|| 
  `---`   `-`   `-` `-----`     `---`   `-`   `-`
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  • 4. Calculating a Woman's Ideal Weight

    In 1983, Dr. J.D. Robinson published the following formula for ideal weight.

    Men:

    Women:

    Weight = 115 pounds + 4 pounds per inch over 5 feet

    Weight = 108 pounds + 3.75 pounds per inch over 5 feet

    Use the formula to find the ideal weight of a woman who is 6 feet 4 inches tall. (See Example 1.)

    Comments (1)

    These comments are not screened before publication. Constructive debate about the information on this page is welcome, but personal attacks are not. Please do not post comments that are commercial in nature or that violate copyright. Comments that we regard as obscene, defamatory, or intended to incite violence will be removed. If you find a comment offensive, you may flag it.
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      ____      ______    _  _    __   __    ______  
 |  _ \\   /_   _//  | \| ||  \ \\/ //  /_____// 
 | |_| ||   -| ||-   |  ' ||   \ ` //   `____ `  
 | .  //    _| ||_   | .  ||    | ||    /___//   
 |_|\_\\   /_____//  |_|\_||    |_||    `__ `    
 `-` --`   `-----`   `-` -`     `-`'    /_//     
                                        `-`
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    Guest   6 years ago |
    gang gang gang gang gang gang gan
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  • 5. Calculating the Ideal Weight of a Person Shorter than 5 Feet

    In 1983, Dr. J.D. Robinson published the following formula for ideal weight.

    Men:

    Women:

    Weight = 115 pounds + 4 pounds per inch over 5 feet

    Weight = 108 pounds + 3.75 pounds per inch over 5 feet

    How do you think you should calculate the ideal weight of a person who is shorter than 5 feet tall? Explain your reasoning. Then find the ideal weight of a woman who is 4 feet 8 inches tall. (See Example 1.)

    • Worked-Out Solution

      To calculate the ideal weight of a woman who is shorter than 5 feet tall, you should subtract 3.75 pounds for every inch under 5 feet. For a man, you should subtract 4 pounds. This is because the Robinson formula gives a linear relationship between ideal weight and height.

      The woman's ideal weight is 93 pounds.

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      _____    __   __    _  __    _____     _____   
 / ____||  \ \\/ //  | |/ //  |  ___||  |__  //  
/ //---`'   \ ` //   | ' //   | ||__      / //   
\ \\___      | ||    | . \\   | ||__     / //__  
 \_____||    |_||    |_|\_\\  |_____||  /_____|| 
  `----`     `-`'    `-` --`  `-----`   `-----`
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  • 6. Comparing Ideal Weights for Men and Women

    In 1983, Dr. J.D. Robinson published the following formula for ideal weight.

    Men:

    Women:

    Weight = 115 pounds + 4 pounds per inch over 5 feet

    Weight = 108 pounds + 3.75 pounds per inch over 5 feet

    Compare the ideal weights for men and women given by the Robinson formula. (See Example 1.)

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     _    _    __   __   __   __     ___      ______  
| |  | ||  \ \\/ //  \ \\/ //   / _ \\   /_   _// 
| |/\| ||   \ ` //    \   //   / //\ \\  `-| |,-  
|  /\  ||    | ||     / . \\  |  ___  ||   | ||   
|_// \_||    |_||    /_//\_\\ |_||  |_||   |_||   
`-`   `-`    `-`'    `-`  --` `-`   `-`    `-`'
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  • 7. Calculating the Body Fat Percentage and Body Mass Index of a Man

    You have the following information about a man.

    Weight: 160 pounds

    Waist: 34 inches

    Age: 21 years

    Find (a) the body fat percentage and (b) the body mass index for the man. (See Example 2.)

    • Worked-Out Solution
      1. Using a spreadsheet, you can see that the man's body fat percentage is about 21.0%.

      2. Use the formula for body mass index to find the man's body mass index.

        The man's body mass index is about 26.94.

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       _____     ___                 ___      ______  
  / ___//   / _ \\      ___     / _ \\   /_   _// 
  \___ \\  | / \ ||    /   ||  | / \ ||  `-| |,-  
  /    //  | \_/ ||   | [] ||  | \_/ ||    | ||   
 /____//    \___//     \__ ||   \___//     |_||   
`-----`     `---`       -|_||   `---`      `-`'   
                         `-`
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    Guest   4 months ago |
    good content
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  • 8. Calculating the Body Fat Percentage and Body Mass Index of a Woman

    You have the following information about a woman.

    Weight: 125 pounds

    Wrist: 4.5 inches

    Waist: 24 inches

    Hips: 30 inches

    Forearm: 7 inches

    Age: 18 years

    Find (a) the body fat percentage and (b) the body mass index for the woman. (See Example 2.)

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    __    __    ______    ______     ___      _____   
\ \\ / //  /_   _//  /_   _//   / _ \\   / ____|| 
 \ \/ //    -| ||-   `-| |,-   / //\ \\ / //---`' 
  \  //     _| ||_     | ||   |  ___  ||\ \\___   
   \//     /_____//    |_||   |_||  |_|| \_____|| 
    `      `-----`     `-`'   `-`   `-`   `----`
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