document.write( "Question 969841: Henry runs
\n" ); document.write( "3
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\n" ); document.write( "28
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\n" ); document.write( "42
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Algebra.Com's Answer #592567 by Boreal(15235)\"\" \"About 
You can put this solution on YOUR website!
This is a proportion problem.\r
\n" ); document.write( "\n" ); document.write( "(3/28) =( x/42)\r
\n" ); document.write( "\n" ); document.write( "Cross-multiply: 42*3=28*x\r
\n" ); document.write( "\n" ); document.write( "126=28*x\r
\n" ); document.write( "\n" ); document.write( "x=(126/28) =4.5 miles\r
\n" ); document.write( "\n" ); document.write( "This works, because 42 minutes is half again of 28 (28+14).
\n" ); document.write( "Four and a half miles is half again of 3 (3+1.5). This is another way to do it.
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