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Q.
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?
A.
35000
B.
45000
C.
55000
D.
65000
View Answer
Correct choice: B
Explanation:
Volume of the wall = (2400 x 800 x 60) cu.cm Volume of bricks = 90% of the volume of the wall = [(90/100) x 2400 x 800 x 60] cu.cm Volume of 1 brick = (24 x 12 x 8) cu.cm Number of bricks = [(90/100) x (2400 x 800 x 60) ]/ (24 x 12 x 8) = 45000
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