Posted by **Anonymous** on Sunday, April 1, 2012 at 10:18pm.

a stack of firewood has 28 pieces on the bottom row,24 on the top of those,then 20 ,and so on.If there are 108 pieces of wood.How many rows are there?

- problem solving -
**MAT**, Sunday, April 1, 2012 at 10:52pm
well you could solve it the long way

28

24

20

16

12

8

4

add um all up=112

108 is 4 less so subtract the last row,

6 rows

there is some equation that is soposed to be faster, but seeing as all that took me 40 seconds aprox. WELL

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