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Math Help - 4 story problems I need help with.

  1. #1
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    Joined
    Jan 2007
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    11

    4 story problems I need help with.

    1) Set up a rational expression equation and solve it in order to answer this question:

    A swimming pool is being filled using two hoses, A and B. If they were working by themselves, hose A would take two hours less time to fill the pool than hose B. Working together, they fill the pool in 8 hours. How long would it take each hose to individually fill the pool?


    2.) Set up a rational expression equation and solve it in order to answer this question:

    A jet travels 360 mph in still air. It flies 480 miles with the wind and 480 miles back against the wind in a combined time of 1.4 hours. Find the wind speed.


    3. On average, the coffee beans from 14 trees are needed to produce about 8 kg of coffee.

    A.) How many trees are needed to produce 1000 kg of coffee?

    B.) How much coffee can 1000 trees produce?


    4.) One of the common screen size ratios for televisions nowadays is 16:9 (long side to short side), assuming a rectangular screen.

    A.) Suppose that a TV screen's long side measures 40 inches. How long is its' short side, assuming a 16:9 ratio?

    B.) Suppose that the Diagonal of a TV screen measures 40 inches. How long are the sides of the screen, assuming a 16:9 ratio?


    Any help is appreciated. I sorely lack at turning word problems in to math problems.
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  2. #2
    Newbie
    Joined
    Jan 2007
    Posts
    11
    Can anyone steer me in the right direction? I understand the distance and rate one's, but I just don't understand how to set these one's up. Again, I'm not begging just looking for some kind of input on how to set these up.

    Thanks.
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