The Priest And The Well

An old priest fell on a bottom of the well of a church.

The well is 20 inches deep.

At day time, the old priest climbs 5-inches but when at dark he slip back 4 inches.

In how many days priest will come out of the well?

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An old priest fell on a bottom of the well of a church.

The well is 20 inches deep.

At day time, the old priest climbs 5-inches but when at dark he slip back 4 inches.

In how many days priest will come out of the well?