document.write( "Question 119061: Kelly has just enough money to rent a canoe for 2.5 hours. How far out on the lake can she paddle out and return if she paddles out at a rate of 3 km/hr and returns at a rate of 2 km/hr.
\n" );
document.write( "I can figure this out logically, but can't figure out how to write the equation \n" );
document.write( "
Algebra.Com's Answer #87163 by stanbon(75887)![]() ![]() ![]() You can put this solution on YOUR website! Kelly has just enough money to rent a canoe for 2.5 hours. How far out on the lake can she paddle out and return if she paddles out at a rate of 3 km/hr and returns at a rate of 2 km/hr. \n" ); document.write( "I can figure this out logically, but can't figure out how to write the equation \n" ); document.write( "---------------------------- \n" ); document.write( "Outward bound DATA: \n" ); document.write( "Distance = x km ; Rate = 3 kph ; Time = d/r = x/3 hrs \n" ); document.write( "-------------- \n" ); document.write( "Inward bound DATA: \n" ); document.write( "Distance = x km ; Rate = 2 kph ; Time = x/2 hrs \n" ); document.write( "-------------- \n" ); document.write( "EQUATION: \n" ); document.write( "time + time = 2.5 hrs \n" ); document.write( "x/3 + x/2 = 5/2 \n" ); document.write( "Multiply thru by 6 to get: \n" ); document.write( "2x + 3x = 15 \n" ); document.write( "5x = 15 \n" ); document.write( "x = 3 km \n" ); document.write( "==================== \n" ); document.write( "Cheers, \n" ); document.write( "Stan H. \n" ); document.write( " \n" ); document.write( " |