document.write( "Question 1070721: if the speed of a car is increased from 90km/h to 120km/h, the time is reduced by one hour to reach the destination. Calculate the distance between the two towns. \n" ); document.write( "

Algebra.Com's Answer #685728 by Fombitz(32388) $\"\"$ $\"About$

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Rate*Time= Distance
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\n" ); document.write( "1. $\"90%2At=D\"$
\n" ); document.write( "2. $\"120%2A%28t-1%29=D\"$
\n" ); document.write( "So,
\n" ); document.write( " $\"90t=120t-120\"$
\n" ); document.write( " $\"-30t=-120\"$
\n" ); document.write( " $\"t=4\"$
\n" ); document.write( "So,
\n" ); document.write( " $\"D=90%2A4\"$
\n" ); document.write( " $\"D=360\"$ $\"km\"$ \r
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