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Math Help - Use system of equation to solve

  1. #1
    Prissy
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    Use system of equation to solve

    A student can make a weekly salary of $200.00 plus 15% commission on sales at the Radio Barn or a weekly salary of $300.00 plus 10% commission on sles at Woofer, Etc. For what amount of sales do these two jobs pay the same?
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  2. #2
    is up to his old tricks again! Jhevon's Avatar
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    Quote Originally Posted by Prissy View Post
    A student can make a weekly salary of $200.00 plus 15% commission on sales at the Radio Barn or a weekly salary of $300.00 plus 10% commission on sles at Woofer, Etc. For what amount of sales do these two jobs pay the same?
    what does "etc" mean? you should not leave out any part of a question if you need someone to help you. you may leave out something important.

    a system of equations is not needed here.

    Let the amount gained in sales be S

    Then working at Radio Barn one can earn 200 + 0.15S dollars.
    Working at Woofer one can earn 300 + 0.1S

    To find the amount of sales we have to make to get equal salaries, just equate the two, thus we need to solve:

    200 + 0.15S = 300 + 0.1S for S
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