document.write( "Question 1073801: Please help me solve
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document.write( "There are 1400 students in a school. The teacher to student ratio is 1:35. How many additional teachers are needed to reduce the ratio to 1:20?
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document.write( "Thank you. \n" );
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Algebra.Com's Answer #688585 by stanbon(75887)![]() ![]() ![]() You can put this solution on YOUR website! There are 1400 students in a school. The teacher to student ratio is 1:35. How many additional teachers are needed to reduce the ratio to 1:20? \n" ); document.write( "------------------------ \n" ); document.write( "teachers:: x \n" ); document.write( "students:: 35x \n" ); document.write( "-------- \n" ); document.write( "Equation:: \n" ); document.write( "x + 35x = 1400 \n" ); document.write( "36x = 1400 \n" ); document.write( "x = 39 when rounded up (teachers now) \n" ); document.write( "35x = 1400-39 = 1361 (students now) \n" ); document.write( "------- \n" ); document.write( "New numbers:: \n" ); document.write( "1/20 = (39+K)/1361 \n" ); document.write( "----- \n" ); document.write( "1361 = 20*39+20k \n" ); document.write( "20k = 481 \n" ); document.write( "k = 24 (# of teachers to add) \n" ); document.write( "----------- \n" ); document.write( "Cheers, \n" ); document.write( "Stan H. \n" ); document.write( "------------- \n" ); document.write( " |