If 20 men can build a wall 56 meters long in 6 days , what length of a similar w

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Question
If 20 men can build a wall 56 meters long in 6 days , what length of a similar wall can be built by 35 men in 3 days?
Options
A. 46
B. 47
C. 48
D. 49

Correct Answer

49

Explanation

Let the required length be x meters

More men, More length built (Direct proportion)

Less days, Less length built (Direct Proportion)

$\begin{array}{r} \begin{matrix} M e n & 20 : 35 \end{matrix} \\ \begin{matrix} D a y s & 6 : 3 \end{matrix} \end{array}\} ? ? 56 : x$

=> (20 x 6 x X)=(35 x 3 x 56)

=> x = 49

Hence, the required length is 49 m.

Chain Rule problems

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Options
A. Monday
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C. Wednesday
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Options
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D. 110

7. If 36 men can do a piece of work in 25 hours, in how mwny hours will15 men do it?
Options
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Options
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Options
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