Question

A snail fells in 20 m deep well , everyday snail climbs 4 m , but slips down 3 m , then how many days will snail require to come out of the well?

Answer 1

4-3=1
so it climbs 1 m everyday then it will take him20 days

Answer 2

according to the question,
depth of the well=20m
snail climbs=4m
and slips down=-3m
total length covered per day=4m+[-3m]
                                             =1m
the required days to come out of the well=?
                                            =the depth of the well/the distance covered per day
                                             =20/1
                                              =20
therefore,the required days to come out of the well is 20 days