Answers

2015-03-26T19:20:22+05:30
No. Of bricks = Dimension of Courtyard ÷ Dimension of 1 Brick.

⇒ 20 × 15 / 0.25 × 12
⇒ 100 

So the answer is 100 Bricks.
0
2015-03-26T19:21:25+05:30
Number of bricks to be paved = Area of courtyard/Area of each brick
According to the question, 
Area of courtyard 
= 2000 x 1500
Area of each brick
= 25 x 1200

Number of bricks = (2000 x 1500)/(25 x 1200)
= 3000000/30000
= 100 bricks 

Hope that helps !! 
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