What is the least number of square tiles required to pave the floor of a room 50 m 00 cm long and 11m 25 cm broad? Choose the correct choice from the following choices:
A) 724 B) 804 C) 814 D) 9000 E) none

Rationale: solution length of largest tile = h . c . f . of 5000 cm & 1125 cm = 25 cm . area of each tile = ( 25 x 25 ) cm 2 ∴ required number of tiles = [ 5000 x 1125 / 25 x 25 ] = 9000 . answer d
Answer: D