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March 30, 2017

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Ken and Ben were both saving money to buy a TV. Ken was $255 short of the amount needed and Ben was $315 short of the amount needed to buy the TV. If they combined their money, they had eaxctly enough to buy one TV. how much did the TV cost?

  • Math Word problem - ,

    If they have enough together to buy a tv, then Ken must be short exactly what Ben has, and vice-versa. So, a tv costs 255+315 = 570.

    or, algebraically, since a TV costs as much as they have together,

    k = (k+b)-255
    b = (k+b)-315

    (k,b) = (315,255)
    tv = k+b = 570

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