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19 February, 19:23

the total length of 4 blue banners and 5 yellow banners is 49 meters. the total length of 2 blue banners and 1 yellow banner is 17 meters all banners of the same color have the same length. find the length of each blue banner.

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  1. 19 February, 19:38
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    Let B represent the length of one blue banner and Y represent the length of one yellow banner.

    4B+5Y=49 meters so ...

    5Y=49-4B

    Y = (49-4B) / 5

    2B+1Y=17 meters

    2B + (49-4B) / 5 = 17

    10B+49-4B=85

    6B+49=85

    6B=36

    B=6 meters!

    Hope that makes sense
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