document.write( "Question 302548: It takes a small jet plane 4 hours less time than it takes a propeller driven plane to travel from Glen Rock to Oakville. The jet plane averages 637 km/h while the propeller plane averages 273 km/h. How far is it from Glen Rock to Oakville? \n" ); document.write( "
Algebra.Com's Answer #217161 by ankor@dixie-net.com(22740)\"\" \"About 
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It takes a small jet plane 4 hours less time than it takes a propeller driven
\n" ); document.write( "plane to travel from Glen Rock to Oakville.
\n" ); document.write( " The jet plane averages 637 km/h while the propeller plane averages 273 km/h.
\n" ); document.write( " How far is it from Glen Rock to Oakville?
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\n" ); document.write( "Let d = distance between these two towns
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\n" ); document.write( "Write a time equation, Time = dist/speed
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\n" ); document.write( "Prop time = Jet time + 4 hrs
\n" ); document.write( "\"d%2F273\" = \"d%2F637\" + 4
\n" ); document.write( "Multiply by 173901(273*637) to clear the denominators, results:
\n" ); document.write( "637d = 273d + 4(173901)
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\n" ); document.write( "637d - 273d = 695604
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\n" ); document.write( "364d = 695604
\n" ); document.write( "d = \"695604%2F364\"
\n" ); document.write( "d = 1911 km between these two downs
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\n" ); document.write( "Check solution by finding the times of each
\n" ); document.write( "1911/273 = 7 hrs
\n" ); document.write( "1911/637 = 3 hrs
\n" ); document.write( "-------------------
\n" ); document.write( "difference 4 hrs
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