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    hollisterchic's Avatar
    hollisterchic Posts: 1, Reputation: 1
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    #1

    Oct 28, 2010, 06:31 AM
    Algebra word problems
    1. With a tailwind, a jet flew 2000 miles in 8 hours, but the return trip against the same wind required 10 hours. Find the jets speed and the wind speed.

    2.the coin box of the vending machine contains 6 times as many quarters as dimes. If the total amount of money at the end of the day is $28.80, how many of each kind of coin are in the box?

    3. a 4% salt solution is mixed with a 16% salt solution. How many milliliters of each solution are needed to obtain 600 milliliters of a 10% solution?
    Unknown008's Avatar
    Unknown008 Posts: 8,076, Reputation: 723
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    #2

    Oct 28, 2010, 11:02 AM

    What have you tried so far?

    In 1.

    Let the speed of the jet be j and the speed of the wind be w.

    What can you say about j and w in the first statement,
    and in the second statement?

    2. Let the number of quarters be q and the number of dimes be d.

    What can you say about them?

    3. Let the volume of 4% salt solution be x and the volume of 16% salt solution by y. What can you say about them?
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