document.write( "Question 476072: If 12 men can dig 35 holes in 14 days,
\n" ); document.write( "(a) how many men are needed to dig 35 holes in 8 days,
\n" ); document.write( "(b) how many days would it take 12 men to dig 30 holes?\r
\n" ); document.write( "\n" ); document.write( "Please help me with ONLY Part B. Part A I know how to do. If Part B needs the answer from Part A, the answer is 21 men.
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Algebra.Com's Answer #326468 by Alan3354(69443)\"\" \"About 
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If 12 men can dig 35 holes in 14 days,
\n" ); document.write( "(a) how many men are needed to dig 35 holes in 8 days,
\n" ); document.write( "35 holes takes 168 man-days
\n" ); document.write( "168 man-days/8 days = 21 men
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\n" ); document.write( "(b) how many days would it take 12 men to dig 30 holes?
\n" ); document.write( "35 holes takes 168 man-days
\n" ); document.write( "--? 168/35 man-days per hole
\n" ); document.write( "= 4.8 man-days per hole
\n" ); document.write( "4.8*30 = 144 man-days
\n" ); document.write( "144 man-days/12 men = 12 days
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\n" ); document.write( "Keeping the units with the calculations makes it more obvious.
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