document.write( "Question 968710: Please help me solve this problem: A car leaves a town at 120 kilometers per hour. How long will it take a second car, travelling at 135 kilometers per hour, to catch the first car if it leaves 1 hour later? \n" ); document.write( "
Algebra.Com's Answer #591911 by josgarithmetic(39617)![]() ![]() ![]() You can put this solution on YOUR website! _________________rate___________time__________distance \n" ); document.write( "firstcar__________r_____________t+k____________d \n" ); document.write( "secondcar_________R______________t_____________d\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "KNOWN: \n" ); document.write( "r=120 \n" ); document.write( "R=135 \n" ); document.write( "k=1 \n" ); document.write( "UNKNOWN: \n" ); document.write( "t, d, the travel time of second car and the distance when equal for both cars\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "RT=D relationship gives the system of equations, \n" ); document.write( " \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "Solve the system for t and d. The question specifically asks for t. The two formulas for d can simply be equated and then solved for t. \n" ); document.write( " |