document.write( "Question 106367: Becky and Rita are 648 miles apart. Becky walks toward Rita at the rate of 2.25 m/s and Rita runs towards Becky. What is Rita's average speed if she reaches Becky in 1.6 minutes? \n" ); document.write( "
Algebra.Com's Answer #77375 by stanbon(75887)![]() ![]() ![]() You can put this solution on YOUR website! Becky and Rita are 648 miles apart. Becky walks toward Rita at the rate of 2.25 m/s and Rita runs towards Becky. What is Rita's average speed if she reaches Becky in 1.6 minutes? \n" ); document.write( "--------------- \n" ); document.write( "Comment: I don't know if your 2.25 m/s is meters/second or 2.25 miles/second \n" ); document.write( "---------------- \n" ); document.write( "Becky DATA: \n" ); document.write( "Rate = 2.25 miles/sec ; distance = x miles ; time = d/r = x/2.25 seconds \n" ); document.write( "--------------- \n" ); document.write( "Rita DATA: \n" ); document.write( "Time = 96 seconds ; distance = 648-x miles ; rate = d/t = (648-x)/96 miles/sec. \n" ); document.write( "--------------------------------- \n" ); document.write( "EQUATION: \n" ); document.write( "Becky time = Rita time \n" ); document.write( "x/2.25 = 96 \n" ); document.write( "x = 216 miles (Becky's distance) \n" ); document.write( "Rita's speed = (648-216)/96 = 432/96 = 4.5 miles/second \n" ); document.write( "=================== \n" ); document.write( "Cheers, \n" ); document.write( "Stan H.\r \n" ); document.write( "\n" ); document.write( " \n" ); document.write( " |