document.write( "Question 11816: Can you go step by step on this problem Im having trouble formulating the necessary formulas.\r
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document.write( "The Petersons drove to a friends house at 80km/h. On the return trip, rain reduced their speed by 10km/h. If their total driving time was 3h, find the total distance driven.\r
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Algebra.Com's Answer #10105 by kapilsinghi(68) ![]() You can put this solution on YOUR website! let the distance one way = x\r \n" ); document.write( "\n" ); document.write( "time taken to go to friends place = x/80 \n" ); document.write( "time taken on way back = x/70\r \n" ); document.write( "\n" ); document.write( "total time = x/80 + x/70 = 3\r \n" ); document.write( "\n" ); document.write( "(70x + 80x)/(70*80) = 3 \n" ); document.write( "150x = 3*70*80 \n" ); document.write( "x = 3*70*80/150 \n" ); document.write( "x = 112 Km\r \n" ); document.write( "\n" ); document.write( "total distance = 224 Km\r \n" ); document.write( "\n" ); document.write( "kapilsinghi123@gmail.com \n" ); document.write( " |