Math

posted by Marie

Cezar ised nails, screws, and pegs to build a model house. He used twice as many as pegs and 3 fewer nails than screws. He used 15 nails. How many pegs did he use?

  1. Reiny

    number of screws ---- x
    number of pegs ---- 2x
    number of nails ---- x-3

    x-3=15 ---> x=18
    so he used 36 pegs

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