document.write( "Question 952735: If 12 persons working 12 hours a day dig 12 meter of tunnel in 12 days. How many men are required to dig additional 4 meters of tunnel given that they work 4 hours a day for 4 days.? \n" ); document.write( "

Algebra.Com's Answer #581798 by josmiceli(19441) $\"\"$ $\"About$

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12 hrs/day for 12 days is $\"+12%2A12+=+144+\"$ hrs
\n" ); document.write( "4 hrs/day for 4 days is $\"+4%2A4+=+16+\"$ hrs
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\n" ); document.write( " $\"+12+%2B+4+=+16+\"$ m of tunnel
\n" ); document.write( "-----------------
\n" ); document.write( "12 persons dig
\n" ); document.write( "12 m of tunnel in
\n" ); document.write( "144 hrs
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\n" ); document.write( "4 persons dig
\n" ); document.write( "4 m of tunnel in
\n" ); document.write( "144 hrs
\n" ); document.write( "-----------------
\n" ); document.write( "16 persons dig
\n" ); document.write( "16 m of tunnel in
\n" ); document.write( "144 hrs
\n" ); document.write( "-----------------
\n" ); document.write( " $\"+9%2A16+=+144+\"$ persons dig
\n" ); document.write( "16 m of tunnel in
\n" ); document.write( "16 hrs
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\n" ); document.write( "144 men are required
\n" ); document.write( "To explain:
\n" ); document.write( " $\"+16+=+%281%2F9%29%2A144+\"$ , so to dig
\n" ); document.write( "the same number of tunnels in
\n" ); document.write( "1/9 the time, it will take
\n" ); document.write( "9 times as many men
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