A rectangular floor that measures 6 meters by 10 meters is to be covered with carpet squares that each measure 2 meters by 2 meters. If the carpet squares cost $15 apiece, what is the total cost for the number of carpet squares needed to cover the floor?  Answers.
A) $200	B) $240	C) $480	D) $225	E) $1,920
The width of the rectangular floor(6 m) is a multiple of one side of the square(2 m), and the length of the floor(10 m) is also a multiple of the side of the square. So the number of carpets to cover the floor is (6/2)*(10/2)= 
<gadget id="calculator">(6/2)*(10/2)</gadget>
<output>15</output>
15.   The total cost is 15*15= 
<gadget id="calculator">15*15</gadget>
<output>225</output>
$225.   The answer is, therefore, $225.
<result>D</result>
A rectangular floor that measures 6 meters by 10 meters is to be covered with carpet squares that each measure 2 meters by 2 meters. If the carpet squares cost $15 apiece, what is the total cost for the number of carpet squares needed to cover the floor?