document.write( "Question 348415: A truck enters a highway driving 60mph. a car enters the highway at the same spot, 8 minutes later and drives 71 mph in the same direction. From the time the car enters the highway, how long will it take the car to pass the truck? \n" ); document.write( "
Algebra.Com's Answer #249105 by checkley77(12844)![]() ![]() ![]() You can put this solution on YOUR website! D=RT \n" ); document.write( "D=60T FOR THE TRUCK. \n" ); document.write( "D=71(T-8/60) \n" ); document.write( "60T=71(T-4/30) \n" ); document.write( "60T=71T-284/30 \n" ); document.write( "60T-71T=-9.467 \n" ); document.write( "-11T=-9.467 \n" ); document.write( "T=-9.467/-11 \n" ); document.write( "T=.86 HOURS OR 51.64 MINUTES TO PASS THE TRUCK. \n" ); document.write( "PROOF: \n" ); document.write( "60*.86=71(.86-8/60 \n" ); document.write( "51.6=71(.86-.1333) \n" ); document.write( "51.6=71*.627 \n" ); document.write( "51.6=51.6 \n" ); document.write( " |