Frog and the Well

Algebra Level 2

A frog is struck in well, 100 m100\text{ m} deep. And tries to come over day-by-day.

  • Each dawn he climbs up 5 m 5\text{ m}.
  • Each night, he sweeps down 3 m3\text{ m}.

Then, find the number of days that it'll take for that frog to come out of that well.

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