If x and y are integers, what is the least positive number of 24x+20y? Pick:
A) 2	B) 3	C) 4	D) 6	E) 8
24x+20y = 4(6x+5y) which will be a minimum positive number when 6x+5y = 1.   6(1) + 5(-1) = 1   Then 4(6x+5y) can have a minimum positive value of 4.   The answer is 4.
<result>C</result>
If x and y are integers, what is the least positive number of 24x+20y?