Planets X, Y and Z take 360, 450 and 540 days, respectively, to rotate around the same sun. If the three planets are lined up in a ray having the sun as its endpoint, what is the minimum positive number of days before they are all in the exact same locations again?
+36916 You will need to find the LCM of 360 450 540 (LCM = least common multiple) ...it is 5400 days (I used an online LCM calculator)
