How many bricks, each measuring 50 cm x 11.25 cm x 6 cm, will be needed to build a wall of 8 m x 6 m x 22.5 cm? Pick.
A) 6400	B) 2400	C) 5500	D) 7400	E) 3200

Rationale: "number of bricks = volume of the wall / volume of 1 brick = ( 800 x 600 x 22.5 ) / ( 50 x 11.25 x 6 ) = 3200 answer : e"
Answer: E