Question 821480
<pre><font face = "Tohoma" size = 3 color = "indigo"><b> 
Hi,
if 12 men complete a work in 4 hours,
in how many {{{green(X)}}} hours 15 will complete the same work.
{{{N[1] * T[1] * W[1] =N[2]*T[2]*W[2]}}}
  {{{12*4hrs*1 = 15X*1}}}
      48= 15X
        3.2hr = X