Answer :
250 divided by 20 is 12.5
50 x 12.5 = 625
Each foot of the wall uses 12.5 bricks to build. 625 bricks would be used to build a 50 foot tall wall.
50 x 12.5 = 625
Each foot of the wall uses 12.5 bricks to build. 625 bricks would be used to build a 50 foot tall wall.