A monkey could climb 6 meters of a round pole in 1 minutes but slipped 3 metres in the next minutes. What time will it take to reach the top of the pole which is 21 meters long.
Answers
Answer: 14 minutes.
Step-by-step explanation:
The first minute, the monkey will go up 6 meters. The second minute, it will go down three meters. So, in the first two mintues, the monkey will go 3 meters up the pole because 6 (meters climbed) minus 3 (meters fallen) equals 3. From this, we deduce that the monkey travels 3 meters up the pole every 2 minutes. Now we just have to divide the 21 meters of the height of the pole by 3, as this will result in the amount of cycles of going up the pole and falling it takes the monkey to get to the top. We get 7. Me multiply 7 by 2 to get the number of minutes, so our answer is 14.
Answer:
11 minutes
Step-by-step explanation:
The monkey climbs 6 m in a minute and falls 3 m in next the minute. So, effectively monkey climbs 6 - 3 = 3 m in every 2 mins that is essentially, 1.5 m in a minute.
Now, with this speed monkey will travel 15 m in 10 minutes. And in the next minute, the monkey will travel 6 m and cover total distance of 21 m. (as it has reached its desired destination it stops there and doesn't fall back.)
Thus, total time taken is 10 minutes (for 15 m) + 1 minute (for next 6 m) = 11 minutes.