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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?
  • a)
    4 p.m.
  • b)
    5 p.m.
  • c)
    6 p.m.
  • d)
    None of these
Correct answer is option 'C'. Can you explain this answer?
Verified Answer
A monkey climbs 30 feet at the beginning of each hour and rests for a ...
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.
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Most Upvoted Answer
A monkey climbs 30 feet at the beginning of each hour and rests for a ...
Given:
- Monkey climbs 30 feet at the beginning of each hour
- Monkey slips back 20 feet before starting to climb again
- Flag is at 120 feet from the ground

To find:
At what time will the monkey first touch the flag?

Approach:
We can break down the monkey's climb in each hour as follows:
- Climbs 30 feet
- Slips back 20 feet
- Net progress = 10 feet

So, in each hour, the monkey makes a net progress of 10 feet towards the flag.

Let's calculate the time taken by the monkey to reach the flag:
- From the ground to 120 feet, the monkey needs to make a net progress of 120 feet (since it slips back 20 feet every hour)
- Time taken = 120/10 = 12 hours

Therefore, the monkey will touch the flag 12 hours after it starts climbing, i.e. at 8.00 a.m. + 12 hours = 8.00 p.m.

However, we need to consider that the monkey climbs only at the beginning of each hour. This means that the monkey will touch the flag at the end of an hour.

Since the monkey starts climbing at 8.00 a.m., it will touch the flag at the end of the 12th hour, i.e. at 6.00 p.m.

Hence, the correct answer is option (c) 6 p.m.
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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?a)4 p.m.b)5 p.m.c)6 p.m.d)None of theseCorrect answer is option 'C'. Can you explain this answer?
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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?a)4 p.m.b)5 p.m.c)6 p.m.d)None of theseCorrect answer is option 'C'. Can you explain this answer? for LR 2025 is part of LR preparation. The Question and answers have been prepared according to the LR exam syllabus. Information about 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?a)4 p.m.b)5 p.m.c)6 p.m.d)None of theseCorrect answer is option 'C'. Can you explain this answer? covers all topics & solutions for LR 2025 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for 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?a)4 p.m.b)5 p.m.c)6 p.m.d)None of theseCorrect answer is option 'C'. Can you explain this answer?.
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