document.write( "Question 628203: Two trucks left two towns A and B at the same time, and each was headed to the other town at a constant speed, passing each other at point C. The truck from town B completed the journey from C to A in 20 minutes. The truck from A completed the journey from A to C in 45 minutes, while maintaining its steady speed of 45 km/h. Find the speed of the truck from B in km/h, assuming that it maintains a constant speed throughout. \n" ); document.write( "
Algebra.Com's Answer #395457 by ankor@dixie-net.com(22740)![]() ![]() You can put this solution on YOUR website! Two trucks left two towns A and B at the same time, and each was headed to \n" ); document.write( " the other town at a constant speed, passing each other at point C. \n" ); document.write( " The truck from town B completed the journey from C to A in 20 minutes. \n" ); document.write( " The truck from A completed the journey from A to C in 45 minutes, while \n" ); document.write( " maintaining its steady speed of 45 km/h. \n" ); document.write( "Find the speed of the truck from B in km/h, assuming that it maintains a constant speed throughout. \n" ); document.write( ": \n" ); document.write( "A <--------<20min<--------C----------------< B; truck from B\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "A >-------->45min>-------C-----------------> B: truck from A (at 45km/h) \n" ); document.write( ": \n" ); document.write( "Change 20 min to .33 hrs \n" ); document.write( "Change 45 min to .75 hrs \n" ); document.write( ": \n" ); document.write( "Since truck from A completed the distance from A to C in 45 min at 45 km/h, \n" ); document.write( "dist from A to C: .75(45) = 33.75 km \n" ); document.write( ": \n" ); document.write( "Find the speed of truck from B, which traveled from C to A in 20 min: \n" ); document.write( "S = |