A courtyard 25 m long and 16 m broad is to be paved with bricks of dimensions 20 cm by 10 cm. The total number of bricks required is Select:
A) 15000
B) 18000
C) 20000
D) 25000
E) None
Solution   Number of bricks   = [ Area of courtyard / Area of 1 brick ]   = [2500×1600 / 20×10]   = 20000.   Answer 20000
<result>C</result>
A courtyard 25 m long and 16 m broad is to be paved with bricks of dimensions 20 cm by 10 cm. The total number of bricks required is