a grocery clerk nstacks three rows of can of fruit for a display, each of the top two rows has 2 fewer cans than the row beneath it, there are 30 cans altogether, how many cans are in each row?

Answer 1

n+ (n-2)+(n-4)=30
solve for n, the bottom row.

Answer 2

First row:8
second row:10
third row:12