document.write( "Question 970958: A car completes a journey in 10 minutes. For the first half of the distance the speed was 60km/hr and the second half the speed was 40 km/hr. How far is the journey?
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Algebra.Com's Answer #593576 by lwsshak3(11628) $\"\"$ $\"About$

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A car completes a journey in 10 minutes. For the first half of the distance the speed was 60km/hr and the second half the speed was 40 km/hr. How far is the journey?
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\n" ); document.write( "let x=total distance of journey
\n" ); document.write( "x/2=distance of first half of journey
\n" ); document.write( "x/2=distance of second half of journey
\n" ); document.write( "travel time=distance/speed
\n" ); document.write( "10 min=1/6 hr
\n" ); document.write( "..
\n" ); document.write( " $\"60%2F%28x%2F2%29%2B40%2F%28x%2F2%29=1%2F6\"$
\n" ); document.write( " $\"120%2Fx%2B80%2Fx=1%2F6\"$
\n" ); document.write( "lcd:x
\n" ); document.write( "120+80=x/6
\n" ); document.write( "x=1200
\n" ); document.write( "How far is the journey? 1200 km \n" ); document.write( "

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