2012 AMC 12B Problems/Problem 7
Revision as of 18:50, 24 February 2012 by Shadow123blast (talk | contribs) (Created page with "== Problem == Small lights are hung on a string 6 inches apart in the order red, red, green, green, green, red, red, green, green, green, and so on continuing this pattern of 2...")
Problem
Small lights are hung on a string 6 inches apart in the order red, red, green, green, green, red, red, green, green, green, and so on continuing this pattern of 2 red lights followed by 3 green lights. How many feet separate the 3rd red light and the 21st red light?
Note: 1 foot is equal to 12 inches.
