SOLUTION: Keith is lining both sides of his 27- foot long driveway with low-wattage lamps. He plans to install one at each end and place one every three feet. How many lamps should he buy?

Algebra ->  Permutations -> SOLUTION: Keith is lining both sides of his 27- foot long driveway with low-wattage lamps. He plans to install one at each end and place one every three feet. How many lamps should he buy?      Log On


   



Question 223838: Keith is lining both sides of his 27- foot long driveway with low-wattage lamps. He plans to install one at each end and place one every three feet. How many lamps should he buy?
Answer by rfer(16322) About Me  (Show Source):