Question

Monkey is climbing an oily pipe. The monkey slips down 2 metres for every 5 metres it climbs. If the height of pipe is 25 metres, how many jumps monkey need to reach the top of the pipe? ​

Answer 1

Explanation:

It is given that the monkey slips down 2 meters for every 5 meters it climbs, meaning it first climbs up 5 meters, then slips down below 2 meters.

So for one jump, he climbs 3 meters.

This continues for 7 cycles, till he has reached 21 meters.

When the monkey reaches 21 meters, his eighth jump allows him to climb out of the well which is 25 meters, and his jump allows him to reach a height of 26 meters, meaning he doesn't slip back down.

Hence, he requires 8 jumps to climb out of the well.

Answer: 8 jumps