ariannawilson23 ariannawilson23

13-05-2016
Mathematics

contestada

A lumberman stacks planks of wood, starting with 30 planks in a row. Each row he stacks has one less plank than the row below it. The last row he stacks has 15 planks. How many rows of planks has he stacked?

12

15

16

18

Respuesta :

Sheehanigans Sheehanigans

13-05-2016

I would say 15. If i am wrong i take full credit.

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