Find the number of bricks, each measuring 24 cm x 12 cm x 8 cm, required to construct a wall 24 m long, 8m high and 60 cm thick, if 10% of the wall is filled with mortar?  Choose one
A) 35000  B) 45000  C) 55000  D) 65000  E) None of these
Explanation:   Volume of the wall = (2400 x 800 x 60) cm3   Volume of bricks = 90% of the volume of the wall   = [(90/100) x 2400 x 800 x 60] cm3   Volume of 1 brick = (24 x 12 x 8) cm3   Number of bricks = [(90/100) x (2400 x 800 x 60) ]/ (24 x 12 x 8) = 45000   Answer: 45000
<result>B</result>
Find the number of bricks, each measuring 24 cm x 12 cm x 8 cm, required to construct a wall 24 m long, 8m high and 60 cm thick, if 10% of the wall is filled with mortar?