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How many bricks, each measuring 25 cm × 11.25 cm × 6 cm, will be needed to build a wall 8 m × 6 m × 22.5 cm ?

A. 5600

B. 6000

C. 6400

D. 7200

Answer: Option C

Solution (By Examveda Team)

$$\eqalign{ & {\text{Number of bricks :}} \cr & = \frac{{{\text{Volume of the wall}}}}{{{\text{Volume of 1 brick}}}} \cr & = \left( {\frac{{800 \times 600 \times 22.5}}{{25 \times 11.25 \times 6}}} \right) \cr & = 6400 \cr} $$

This Question Belongs to Arithmetic Ability >> Volume And Surface Area

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