Joey can make 1 thank you card in 1/6 of an hour.
Find the total number of cards will Joey make in ¾ of an hours
=> 1/6 and ¾, they do not have common denominator
Find the Least common denominator of the given equation
=> let 24 be the LCD
=> ¾ divided by 1/6 =18/24 divided by 4/24
=> 18/24 divided by 4/24
=> 9/2 or 4 and ½
Thus, Joey can make 4 and ½ thank you card.