Question

If 10 men can build a 120 metres long wall in 12 days what length of similar wall can be built by 25 men in 15 days

Answer 1

Answer:

HELLO DEAR,

LET THE REQUIRED LENGTH BE x METERS

MORE MEN, More Length Built (DIRECT PROPORTION)

LESS DAYS, LESS LENGTH BUILT

(DIRECT PROPORTION)

MEN, 20 : 25}::

DAYS ,6 : 3}:: 112 : x

=> (20 x 6 x X)=(25 x 3 x 112)

=> x =

Hence, the required length is m.

\begin{lgathered}x = \frac{25 \times 3 \times 112}{20 \times 6} \\ = > x = \frac{75 \times 112}{120} \\ = > \frac{8400}{120} \\ = > x = 70meter\end{lgathered}

x=

20×6

25×3×112

=>x=

120

75×112

=>

120

8400

=>x=70meter

I HOPE ITS HELP YOU DEAR,

THANKS

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