A frog at the bottom of a well climbs up 3 ft every day, but slips back 2 ft during the night. How long will it take to reach the top, if the well is 20 ft deep?

A frog at the bottom of a well climbs up 3 ft every day, but slips back 2 ft during the night. How long will it take to reach the top, if the well is 20 ft deep?

20

THE ANSWER IS 20

18

no, hitesh chitan is wrong

the correct ans is 17.5 days

yes Chintan is correct.

On 18th evening, frog reaches the TOP of the well.