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A man makes 60 articles in the 1st hour. His efficiency decreases by 25% in the 2nd, increases by 40% in the 3rd hour, decreases by 33% in the 4th four and increases by 50% in the 5th hour. If he has to work for more than 1 hour, then in which hour the average number of articles produced per hour till then would be minimum ? (A) The 2nd hour (B) After the 5th hour (C) The 2nd and the 4th hour (D) None of these?
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A man makes 60 articles in the 1st hour. His efficiency decreases by 2...
To find out in which hour the average number of articles produced per hour till then would be minimum, we need to calculate the average number of articles produced per hour for each hour and compare them.

Let's calculate the average number of articles produced per hour for each hour:

- 1st hour: The man makes 60 articles in the 1st hour, so the average number of articles produced per hour is 60/1 = 60.

- 2nd hour: The man's efficiency decreases by 25% in the 2nd hour. So, the number of articles he makes in the 2nd hour is 60 - (25% of 60) = 60 - 15 = 45. The average number of articles produced per hour for the first 2 hours is (60 + 45)/2 = 105/2 = 52.5.

- 3rd hour: The man's efficiency increases by 40% in the 3rd hour. So, the number of articles he makes in the 3rd hour is 45 + (40% of 45) = 45 + 18 = 63. The average number of articles produced per hour for the first 3 hours is (60 + 45 + 63)/3 = 168/3 = 56.

- 4th hour: The man's efficiency decreases by 33% in the 4th hour. So, the number of articles he makes in the 4th hour is 63 - (33% of 63) = 63 - 20.79 = 42.21 (approx). The average number of articles produced per hour for the first 4 hours is (60 + 45 + 63 + 42.21)/4 = 210.21/4 = 52.55 (approx).

- 5th hour: The man's efficiency increases by 50% in the 5th hour. So, the number of articles he makes in the 5th hour is 42.21 + (50% of 42.21) = 42.21 + 21.10 = 63.31 (approx). The average number of articles produced per hour for the first 5 hours is (60 + 45 + 63 + 42.21 + 63.31)/5 = 273.52/5 = 54.70 (approx).

Comparing the average number of articles produced per hour for each hour, we can see that the minimum average is in the 2nd hour with 52.5. Therefore, the answer is (C) The 2nd and the 4th hour.
Community Answer
A man makes 60 articles in the 1st hour. His efficiency decreases by 2...
Answer is - C
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A man makes 60 articles in the 1st hour. His efficiency decreases by 25% in the 2nd, increases by 40% in the 3rd hour, decreases by 33% in the 4th four and increases by 50% in the 5th hour. If he has to work for more than 1 hour, then in which hour the average number of articles produced per hour till then would be minimum ? (A) The 2nd hour (B) After the 5th hour (C) The 2nd and the 4th hour (D) None of these?
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A man makes 60 articles in the 1st hour. His efficiency decreases by 25% in the 2nd, increases by 40% in the 3rd hour, decreases by 33% in the 4th four and increases by 50% in the 5th hour. If he has to work for more than 1 hour, then in which hour the average number of articles produced per hour till then would be minimum ? (A) The 2nd hour (B) After the 5th hour (C) The 2nd and the 4th hour (D) None of these? for CAT 2024 is part of CAT preparation. The Question and answers have been prepared according to the CAT exam syllabus. Information about A man makes 60 articles in the 1st hour. His efficiency decreases by 25% in the 2nd, increases by 40% in the 3rd hour, decreases by 33% in the 4th four and increases by 50% in the 5th hour. If he has to work for more than 1 hour, then in which hour the average number of articles produced per hour till then would be minimum ? (A) The 2nd hour (B) After the 5th hour (C) The 2nd and the 4th hour (D) None of these? covers all topics & solutions for CAT 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for A man makes 60 articles in the 1st hour. His efficiency decreases by 25% in the 2nd, increases by 40% in the 3rd hour, decreases by 33% in the 4th four and increases by 50% in the 5th hour. If he has to work for more than 1 hour, then in which hour the average number of articles produced per hour till then would be minimum ? (A) The 2nd hour (B) After the 5th hour (C) The 2nd and the 4th hour (D) None of these?.
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