A snail is at the bottom of a well 30 feet deep. It crawls up 3 feet each day, but at night, it slips down 2 feet. How long does it take for the snail to crawl out the well?

• 28 days.
  
  As it slips down 2 feet per day that means it crawls only 1 feet per day. So, in 27 days it crawls 27 feet and in the 28th day it reaches 30 feet.
• 10 years agoHelpfull: Yes(9) No(0)
• @SHANU...Its ok..u started right but u end wrong :)
• 10 years agoHelpfull: Yes(3) No(0)
• Snehasis u are right, i made a stupid mistake
• 10 years agoHelpfull: Yes(2) No(0)
• Takes 12 hours(during day) to travel 3 feet upwards.
  Takes 12 hours(during nigt) to travel 2 feet downwards.
  So total progress in 24 hour is 3-2 = 1 feet
  So, total time taken to get out of well(that is progress all 30 feet) = 24*30 hours
• 10 years agoHelpfull: Yes(0) No(5)
• Answer is 30 days, finally it took 30 days to reach, on 28th day it reaches to 30 feet but again it slips down to 2 feet.
• 6 years agoHelpfull: Yes(0) No(0)