document.write( "Question 174073: Doctor White leaves home to drive to a convention. She is traveling at 55miles/hour. She is 10 miles from home when her husband realizes that she has forgotten her briefcase. How fast will he have to drive to catch her in two hours? \n" ); document.write( "
Algebra.Com's Answer #128985 by ankor@dixie-net.com(22740)![]() ![]() You can put this solution on YOUR website! traveling at 55miles/hour. She is 10 miles from home when her husband realizes \n" ); document.write( " that she has forgotten her briefcase. How fast will he have to drive to catch her in two hours? \n" ); document.write( ": \n" ); document.write( "Find how far ahead White is at the start in terms of time (hrs): \n" ); document.write( "time = 10/55 \n" ); document.write( "time = 5/11 hrs \n" ); document.write( ": \n" ); document.write( "White travel time = 2 \n" ); document.write( "Husband's travel time = 2 hrs \n" ); document.write( ": \n" ); document.write( "Let s = speed required for him to catch up in two hrs \n" ); document.write( "; \n" ); document.write( "When he catches up, they will have traveled the same distance \n" ); document.write( "Write a dist equation from this fact: (Dist = time * speed) \n" ); document.write( ": \n" ); document.write( "2s = \n" ); document.write( "2s = 27(5) \n" ); document.write( "2s = 135 \n" ); document.write( "s = 67.5 mph to catch W in 2 hrs \n" ); document.write( "; \n" ); document.write( ": \n" ); document.write( "Check solution by find the distances: \n" ); document.write( "White's dist: 135 mi \n" ); document.write( "Husband's dist: 2*67.5 = 135 mi also\r \n" ); document.write( "\n" ); document.write( " \n" ); document.write( " |