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Sam had a total of 80 foreign stamps and local stamps combined. After giving away 1/3 of his foreign stamps and 10 local stamps, he had an equal number of foreign stamps and local stamps left. How many local stamps did he have in the beginning?

  • math -

    f+l = 80
    2/3 f = l-10


    2/3(80-l) = l - 10
    160-2l = 3l-30
    190 = 5l
    l = 38

    initially there were
    38 local and 42 foreign
    after removing 10 local and 14 foreign, there were 28 of each.

  • math -

    Where do you get 2/3rds from

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