A class is 6 meters 24 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 class room ?
Select.
A) 115  B) 117  C) 116  D) 114  E) 113
Explanation:   Length = 6 m 24 cm = 624 cm   Width = 4 m 32 cm = 432 cm   HCF of 624 and 432 = 48   Number of square tiles required = (624 x 432)/(48 x 48) = 13 x 9 = 117.   ANSWER IS 117
<result>B</result>
A class is 6 meters 24 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 class room ?