A room is 5 meters 76 centimeters in length and 4 meters 32 centimeters in Width. Find the least number of square tiles of equal size required to cover the entire floor of the room.	Choose the correct choice from the following answers:
A) 12
B) 15
C) 17
D) 137
E) 147
Let us calculate both the length and width of the room in centimeters.   Length = 5 meters and 76 centimeters = 576 cm   width = 4 meters and 32 centimeters = 432 cm   As we want the least number of square tiles required, it means the length of each square tile should be as large as possible.Further,the length of each square tile should be a factor of both the length and width of the room.   Hence, the length of each square tile will be equal to the HCF of the length and width of the room = HCF of 576 and 432 = 144   Thus, the number of square tiles required = (576 x 432 ) / (144 x 144) = 4 x 3 = 12   Answer: 15
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A room is 5 meters 76 centimeters in length and 4 meters 32 centimeters in Width. Find the least number of square tiles of equal size required to cover the entire floor of the room.