if 20 men can finish a piece of work in 20 days in how many days can 25 men do it - Wikitechy https://www.wikitechy.com/interview-questions/tag/if-20-men-can-finish-a-piece-of-work-in-20-days-in-how-many-days-can-25-men-do-it/ Interview Questions Mon, 06 Sep 2021 05:23:05 +0000 en-US hourly 1 https://wordpress.org/?v=6.9.4 https://www.wikitechy.com/interview-questions/wp-content/uploads/2025/10/cropped-wikitechy-icon-32x32.png if 20 men can finish a piece of work in 20 days in how many days can 25 men do it - Wikitechy https://www.wikitechy.com/interview-questions/tag/if-20-men-can-finish-a-piece-of-work-in-20-days-in-how-many-days-can-25-men-do-it/ 32 32 4 men can check exam papers in 8 days working 5 hours regularly. What is the total hours when 2 men will check the double of the papers in 20 days ? https://www.wikitechy.com/interview-questions/time-and-work/4-men-can-check-exam-papers-in-8-days-working-5-hours-regularly-what-is-the-total-hours-when-2-men-will-check-the-double-of-the-papers-in-20-days/ https://www.wikitechy.com/interview-questions/time-and-work/4-men-can-check-exam-papers-in-8-days-working-5-hours-regularly-what-is-the-total-hours-when-2-men-will-check-the-double-of-the-papers-in-20-days/#respond Wed, 18 Aug 2021 02:58:28 +0000 https://www.wikitechy.com/interview-questions/?p=2084

4 men can check exam papers in 8 days working 5 hours regularly. What is the total hours when 2 men will check the double of the papers in 20 days ?

A. 8 hours

B. 9 hours

C. 7 hours

D. 11 hours

Answer : A. 8 hours

Explanation:

    • Let a man can do 1 unit of work in 1 hour.
    • Total units of work = 4 * 8 * 5 = 160 units.
    • Now work = 2 * 160 = 320 units
    • Now 2 men work for 20 days. Let in x hours they have to work per day.
    • Now total work = 2 * x * 20 = 40x
    • 40x = 320
    • So x = 320/40
      • =

    8 hours

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