Algebra1 Math

A moving company charges $800 plus $16 per hour. Another moving company charges $720 plus $21 per hour. How long is job that costs the same no matter which company is used?

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  1. Let x = time in hours
    Since their costs must be equal,
    800 + 16x = 720 + 21x
    Solving,
    800 - 720 = 21x - 16x
    80 = 5x
    x = 16 hours

    Hope this helps~ :3

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  2. 13242

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  3. 16 hours

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