In a room of dimensions l*b*h = 16*14*12, bricks of dimensions 6*4*2 are placed in such a way tha

M4maths Previous Puzzles

14 Jul 2009 room of Bricks

In a room of dimensions l*b*h = 16*14*12, bricks of dimensions 6*4*2 are placed
in such a way that the room is occupied completely. Total number of bricks in a layer on the floor is :-

OPtion

1) 12
2) 56
3) 24
4) 8
5) 28
6) 82
7) 14
8) 48
9) 128
10) 192

Solution

On the basis of dimensions of brick it is necessary to place the brick in the room in such a way that
l = 4
b = 2
h = 6
( If we place the brick in any other manner then it is not possible to fill the room completely)
Now area of floor = 16*14 = 224
And area of brick = 4*2 = 8
Hence Number of bricks = 224/8 = 28

Correct Option: 5 Best Solution (0)