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March 30, 2017

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Find the number of each kind of object in the collection
Curt has 12 models in all. Three of the models are airplanes. Curt has 5 more models of cars than boats. How many models of cars does Curt have?

  • Math - ,

    a + c + b =12

    3 = a

    b + 5 = c

    Substitute into the original equation:

    3 + b + 5 + b = 12

    Solve for b to find the number of boats.

    Add 5 to the number of boats to find the number of cars.

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