How many days does it take before the snail reaches the top of the pit? A snail is at the bottom of a 20 meters deep pit. Every day the snail climbs 5 meters upwards, but at night, it slides 4 meters back downwards. How many days does it take before the snail reaches the top of the pit?

2
20 days ithink
4 days bcoz 5x4=20
but it slides 4m down each day

Answers

2015-11-13T18:21:54+05:30
In one day the snail travels 5m upwards but slides down 4m.
Therefore total distance covered in one day = 1m
Then for 20 m = 1 × 20 = 20
Therefore the snail takes 20 days to reach the top.
I am sure of this answer
0
2015-11-13T19:43:30+05:30
Pit=20 m
every it clibs 5m and slides 4 m down . therefore each day it climbs 5-4=1 m
therefore it will take 20 ×1=20 days
0