[PPSC Cooperative Society Inspector 2022]

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

1. 20 days

2. 18 days

3. 17 days

4. 16 days

Correct Answer :

16 days