document.write( "Question 281166: Can you please explain to me how to work this problem?
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document.write( "If 8 workers can paint the walls of a gymnasium in 6 hours, how fast can 12 painters do it?\r
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document.write( "This is what i tried, and my mom even tried to help me, but we could not figure it out.\r
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document.write( "8/6= 0.75 so 12(0.75) must give me the correct answer...
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document.write( "Well i got 9 hours which i know isn't correct because if 8 painters can do it in 6 hours, 12 painters should be able to do it faster... right?\r
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document.write( "Thank you. \n" );
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Algebra.Com's Answer #204258 by richwmiller(17219)![]() ![]() You can put this solution on YOUR website! Before we actually solve it let's look at what you tried. \n" ); document.write( "8/6 does not equal .75 but 4/3 or 1 1/3 \n" ); document.write( "6/8=.75 \n" ); document.write( "and you are right 12 painters should do it faster than 6 hours unless the new painters are all supervisors.\r \n" ); document.write( "\n" ); document.write( "Now to solve it. \n" ); document.write( "8 painters worked for 6 hours \n" ); document.write( "That's 48 manhours were needed \n" ); document.write( "The number of manhours is the same but we are going to divide 48 by 12 workers. not just 8 \n" ); document.write( "48/12=4 \n" ); document.write( "It should take the 12 painters 4 hours if they have their own equipment and don't get in each others way.\r \n" ); document.write( "\n" ); document.write( "6*8=x*12 \n" ); document.write( "48=x*12 \n" ); document.write( "4=x \n" ); document.write( "what is 4? hours worked by 12 workers \n" ); document.write( "what is 6? hours worked by 8 workers\r \n" ); document.write( " \n" ); document.write( " \n" ); document.write( " \n" ); document.write( "\n" ); document.write( " \n" ); document.write( " |