In a certain brick wall, each row of bricks above the bottom row contains one less brick than the row just below it. If there are 5 rows in all and a total of 50 bricks in the wall, how many bricks does the bottom row contain ?	Choose the correct choice from the following answers
A) 12 B) 10 C) 9 D) 8 E) 11
The bottom row has x bricks   x+x-1+x-2+x-3+x-4 = 50   5x-10=50   5x=40   x=8   Answer:8
<result>D</result>
In a certain brick wall, each row of bricks above the bottom row contains one less brick than the row just below it. If there are 5 rows in all and a total of 50 bricks in the wall, how many bricks does the bottom row contain ?