document.write( "Question 409000: You estimate that you can do 12 math problems in 45 min. How long should it take you to do 20 math problems? \n" ); document.write( "
Algebra.Com's Answer #288022 by rfer(16322)\"\" \"About 
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12/45=20/x
\n" ); document.write( "12x=900
\n" ); document.write( "x=75 min= 1 hr 15 min
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