Latest HCL Aptitude Question SOLUTION: A monkey climbs 30 feet at the beginning of each hour and rests for a while when he slips back 20 feet before he again starts climbing in the beginning of the next hour. If he begi

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(#M40157923) HCL Category question Keep an EYE

A monkey climbs 30 feet at the beginning of
each hour and rests for a while when he slips
back 20 feet before he again starts climbing
in the beginning of the next hour. If he begins
his ascent at 8.00 a.m., at what time will he
first touch a flag at 120 feet from the ground

Asked In HCL NEEMA JOSEPH (7 years ago)

Unsolved Read Solution (7)

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Read Solution (7) :

Rahul Patil  (7 years ago)

answer: 6pm
net ascent in one hour=10 feet
so 9 hrs=90 feet
till 5 pm it climbs 90 feet then at 6pm it climbs 120 feet

Is this solution Helpfull? Yes (11) | No (5)  

akbarmuddasir  (7 years ago)

Net ascent of the monkey in 1 hour = (30 - 20) feet = 10 feet.
So, the monkey ascends 90 feet in 9 hours i.e. till 5 p.m.
Clearly, in the next 1 hour i.e. till 6 p.m. the monkey ascends remaining 30 feet to touch the flag.

Is this solution Helpfull? Yes (4) | No (1)  

akbarmuddasir  (7 years ago)

10hrs time at 6pm

Is this solution Helpfull? Yes (2) | No   

Avinash Erande  (7 years ago)

on 5PM he will reach

Is this solution Helpfull? Yes (1) | No (2)  

Rajakuppusami  (6 years ago)

30feet claim (first) - 20feet (rest)= 10feet claims an hour
For 8 hour = 80feet
Next 80+30=110 feet (first)
110-20(rest)=90
Next 90+30=120(first)
So it take 9 hours
Ans: 5pm

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Aditya  (6 years ago)

for every hour monkey climbs 30feet and slips 20feet, which is 10feet per hour. since (30-20).
In this fashion, monkey reaches to 90 feet in 9 hours. As monkey climbs 30 feet every beginning of hour, at the beginning of 10th hour, monkey reaches 120 feet. since 90feet (for 9 hours) + 30feet (beginning of 10th hour).
Therefore total time taken for monkey to climb 120feet is 10 hours. If monkey starts in the morning at 8:00am, then it reaches 120feet at 6:00pm.

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anwasha halder  (7 years ago)

read the question carefully and you will get that in 1hour he will climb only 10 feet.
so 1hour = 10 feet
so 120 feet = 120/ 10 = 12 hours
so if he starts at 8am then he will reach 12o feet at 8pm..
and if u add few spare times in between each hour then
9pm
so answer is either 8pm or 9pm

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