document.write( "Question 364896: Marie jogs at an average speed of 6 miles per hr for 1.5 hrs along a straight path and then turns around to jog back to her starting point.Marie had scheduled 2.5 hrs to jog the total distance.If Marie is to arrive back exactly on scheduled , at what average speed , in miles per hrs, must she3 jog back to her starting point? \n" ); document.write( "
Algebra.Com's Answer #260290 by ankor@dixie-net.com(22740)![]() ![]() You can put this solution on YOUR website! Marie jogs at an average speed of 6 miles per hr for 1.5 hrs along a straight \n" ); document.write( " path and then turns around to jog back to her starting point. \n" ); document.write( "Marie had scheduled 2.5 hrs to jog the total distance. \n" ); document.write( "If Marie is to arrive back exactly on scheduled, at what average speed, in miles \n" ); document.write( " per hrs, must she jog back to her starting point? \n" ); document.write( ": \n" ); document.write( "Find the distance to the point he turns around. \n" ); document.write( "1.5 * 6 = 9 mi \n" ); document.write( "This is also the distance to the starting point \n" ); document.write( "2.5 - 1.5 = 1 hr is the time required to return to the starting point \n" ); document.write( "It's obvious he has to jog at 9 mph, to go 9 mi in 1hr \n" ); document.write( ": \n" ); document.write( "Confirm this with a time equation \n" ); document.write( "Write a time equation: time = dist/speed \n" ); document.write( " \n" ); document.write( "1.5 + 1 = 2.5 \n" ); document.write( " |