VERY URGENT math question

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Owen was stacking popcorn balls on a table. He put sixteen balls on the table. He added three more layers. Each layer had four fewer balls than the previous layer. How many popcorn balls in all did Owen put on the table?

  • VERY URGENT math question -

    4
    8
    12
    16

    What is the total?

  • VERY URGENT math question -

    40 popcorn balls? I am right i think.

  • VERY URGENT math question -

    Right.

  • VERY URGENT math question -

    Thanks

  • VERY URGENT math question -

    You're welcome.

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