document.write( "Question 269634: a motorist drove 150 miles on country roads before driving 50 miles on mountain roads. the rate of speed on the country roads was 3 times the rate on mountain roads. the time spent traveling the 200 miles was 5 hours. find the rate of the motorist on country roads?\r
\n" ); document.write( "\n" ); document.write( "i let x=rate of the motorist on mountain road
\n" ); document.write( "and 3x rate of the motirist on country roads\r
\n" ); document.write( "\n" ); document.write( "i set up the equation x/200 - 3x/200 = 5
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Algebra.Com's Answer #197606 by stanbon(75887)\"\" \"About 
You can put this solution on YOUR website!
a motorist drove 150 miles on country roads before driving 50 miles on mountain roads.
\n" ); document.write( "the rate of speed on the country roads was 3 times the rate on mountain roads.
\n" ); document.write( "the time spent traveling the 200 miles was 5 hours.
\n" ); document.write( "find the rate of the motorist on country roads?
\n" ); document.write( "---
\n" ); document.write( "Country Road DATA:
\n" ); document.write( "distance = 150 miles ; rate = 3x mph ; time = d/r = 150/(3x) = 50/x hrs.
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\n" ); document.write( "Mountain Road DATA:
\n" ); document.write( "distance = 50 miles ; rate = x mph ; time = d/r = 50/x hrs
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\n" ); document.write( "Equation:
\n" ); document.write( "time + time = 5 hrs
\n" ); document.write( "2(50/x) = 5
\n" ); document.write( "100/x = 5
\n" ); document.write( "5x = 100
\n" ); document.write( "x = 20 mph on mountain Roads
\n" ); document.write( "3x = 60 mph on country Roads
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\n" ); document.write( "Cheers,
\n" ); document.write( "Stan H.
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\n" ); document.write( "
\n" ); document.write( "i let x=rate of the motorist on mountain road
\n" ); document.write( "and 3x rate of the motirist on country roads
\n" ); document.write( "i set up the equation x/200 - 3x/200 = 5
\n" ); document.write( "Comment: x/200 is time/distance = rate
\n" ); document.write( "But 5 is time
\n" ); document.write( "You need an equation that says time + time = time.
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