If k > 0, x + k = y, and y + 5k = z, what is the ratio between z - x and y - x ?	Choose the correct answer:  A) 2 to 1  B) 3 to 1  C) 4 to 1  D) 5 to 1  E) 6 to 1
y-x = k   z-y = 5k   Let's add the two equations together:   z-x = 6k   The ratio of z-x to y-x is 6:1.   The answer is 6 to 1.
<result>E</result>
If k > 0, x + k = y, and y + 5k = z, what is the ratio between z - x and y - x ?