A man is climbing up a mountain which is inclined. He has to travel 100 km to reach top of mountain. Every day He climbs up 2 km forward in day time. Exhausted, he then takes rest there at night time. At night, while he is asleep, he slips down 1 km backward because mountain is inclined.
Then how many days does it take him to reach mountain top ????
Answer : 99 days
Each day, Total progress = 2 km – 1 km = 1 km
So, 98 days = 98 Kms.
On 99th day he can reach mountain top by travelling 2 km in day time.
So, answer is 99 days.