document.write( "Question 79115: at 1:00 p.m., a car leave a city and travels north at a rate of 55mi/h. An hour later, a second care leaves the city and travels south at a rate of 60 mi/hr. At what time will the two cars be 285 miles apart? \n" ); document.write( "
Algebra.Com's Answer #56778 by checkley75(3666)\"\" \"About 
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55T+60(T-1)=285
\n" ); document.write( "55T+60T-60=285
\n" ); document.write( "115T=285+60
\n" ); document.write( "115T=345
\n" ); document.write( "T=345/115
\n" ); document.write( "T=3 HOURS AFTER THE FIRST CAR LEAVES THEY WILL BE 285 MILES APART.
\n" ); document.write( "PROOF:
\n" ); document.write( "55*3+60*2=285
\n" ); document.write( "165+120=285
\n" ); document.write( "285=285
\n" ); document.write( "
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