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Math Help - Applications in insight

  1. #1
    Junior Member Euclid Alexandria's Avatar
    Joined
    Oct 2005
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    Near Dallas, Texas
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    Red face Applications in insight

    From the book: "Suppose you weigh 170 pounds and you eat two Taco Bell chicken burritos for lunch. What combination of 30-minute activities could you do to burn all the calories in the burritos?"

    The book lists the burritos as containing 345 calories each.

    30-minute activities to choose from:

    Indoor activities
    130 Vacuuming
    135 Mopping floors
    135 Shopping for food
    145 Ironing clothes

    Outdoor activities
    200 Chopping wood
    235 Ice skating
    330 Cross-country skiing
    350 Shoveling snow

    First I multiplied one of the burritos calories by two, discovering how many calories I would need to burn: 700

    Second, I added all the 30-minute exercises to see how much potential for burned calories was available: 1,660

    Third, 1,660 - 700 = 960 calories that I would not need to burn.

    Fourth, I picked through the list, finding the 30-minute exercises that would burn at least 960 calories when added up. These are the exercises I would not need.

    350
    330
    145
    135
    ___
    960


    Fourth, I was left with four 30-minute exercises that would burn all the calories in the burritos, and the problem was solved.

    235 Ice skating
    200 Chopping wood
    135 Mopping floors
    130 Vacuuming
    ___
    700

    Afterward, I realized I could have simply (1) multiplied one of the burritos calories by two, discovering how many calories I would need to burn, afterward (2) picking through the list, finding the 30-minute exercises that would burn at least 700 calories when added up, solving the problem in fewer steps.

    One is not always required to walk around the house, crawl over the fence, and use the backdoor. Sometimes, it is fine to simply walk right in the front door.
    Last edited by Euclid Alexandria; December 26th 2005 at 08:59 AM.
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