Sara brought a total of 8 nails at ace hardware . she purchased both 6 penny nails and 10 penny nails . she brought 2 more 6 penny nails then she did 10 penny nails . she had a total of 8 mails. How many 6 penny and 10 penny nails did sara purchase

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  1. if there are x 6d nails, and y 10d nails, then you have been told that

    x+y = 8
    x = y+2

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  2. x = # of 6-penny-nails
    y = # of 10-penny-nails

    x + y = 8
    x = y + 2

    Answer is five 6-penny-nails
    and three 10-penny nails.

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