8 workers can build a wall 18m long - Wikitechy https://www.wikitechy.com/interview-questions/tag/8-workers-can-build-a-wall-18m-long/ Interview Questions Mon, 06 Sep 2021 07:16:22 +0000 en-US hourly 1 https://wordpress.org/?v=6.9 https://www.wikitechy.com/interview-questions/wp-content/uploads/2025/10/cropped-wikitechy-icon-32x32.png 8 workers can build a wall 18m long - Wikitechy https://www.wikitechy.com/interview-questions/tag/8-workers-can-build-a-wall-18m-long/ 32 32 If 30 men can build a wall 56 meters long in 5 days, what length of a similar wall can be built by 40 men in 3 days ? https://www.wikitechy.com/interview-questions/chain-rule/if-30-men-can-build-a-wall-56-meters-long-in-5-days-what-length-of-a-similar-wall-can-be-built-by-40-men-in-3-days/ https://www.wikitechy.com/interview-questions/chain-rule/if-30-men-can-build-a-wall-56-meters-long-in-5-days-what-length-of-a-similar-wall-can-be-built-by-40-men-in-3-days/#respond Tue, 17 Aug 2021 21:59:04 +0000 https://www.wikitechy.com/interview-questions/?p=1981

If 30 men can build a wall 56 meters long in 5 days, what length of a similar wall can be built by 40 men in 3 days ?

A. 36.5 m

B. 44.8 m

C. 62.3 m

D. 92 m

Answer : B. 44.8 m

Explanation:

Let the required length be x meters
More men, More length built (Direct proportion)
Less days, Less length built (Direct Proportion)
(30 x 5 x X) = (40 x 3 x 56)
=> x = 44.8
Hence, the required length is 44.8 m.

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