document.write( "Question 362534: Harry walked to the town at a speed of 4 miles/hr, and came back by bicycle at a speed of 12 miles/hr. The total time for to and fro journey was 5/2 hrs. Find the time taken by him to travel foot. \n" ); document.write( "
Algebra.Com's Answer #258386 by stanbon(75887)\"\" \"About 
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Harry walked to the town at a speed of 4 miles/hr, and came back by bicycle at a speed of 12 miles/hr. The total time for to and fro journey was 5/2 hrs. Find the time taken by him to travel foot.
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\n" ); document.write( "Walk DATA:
\n" ); document.write( "rate = 4 mph ; distance = x miles ; time = x/4 hrs
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\n" ); document.write( "Bike DATA:
\n" ); document.write( "rate = 12 mph ; distance = x miles; time = 1/12 hrs
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\n" ); document.write( "Equation:
\n" ); document.write( "time + time = 5/2
\n" ); document.write( "x/4 + x/12 = 5/2
\n" ); document.write( "---
\n" ); document.write( "3x + x = 30
\n" ); document.write( "4x = 30
\n" ); document.write( "x = 7.5 miles (
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\n" ); document.write( "Walk time = x/4 = (7.5/4)(60 min) = 112.5 min = 1 hr 52.5 min
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\n" ); document.write( "Cheers,
\n" ); document.write( "Stan H. \n" ); document.write( "
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