document.write( "Question 485943: If Joey can do x math problems in three minutes, how many problems can he do in N hours? \n" ); document.write( "

Algebra.Com's Answer #332276 by Edwin McCravy(20056) $\"\"$ $\"About$

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If Joey can do x math problems in three minutes, how many problems can he do in N hours?
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document.write( "There are 60 minutes in an hour.  \r\n" );
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document.write( "For every 3-minute period in an hour he can do x math problems.\r\n" );
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document.write( "Let's find out how many 3-minute periods there are in 1 hour.\r\n" );
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document.write( "60÷3 is 20, so there are 20 3-minute periods in 1 hour.  \r\n" );
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document.write( "In each of those 20 3-minute periods Joey can do x math problems.\r\n" );
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document.write( "Therefore in all 20 of those 3-minute periods he can do 20x math problems.\r\n" );
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document.write( "So in 1 hour he can do 20x math problems.\r\n" );
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document.write( "Therefore in N hours he can do 20xN math problems.\r\n" );
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document.write( "Edwin

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