document.write( "Question 362914: Jeff starts driving at 55 miles per hour from the same point that lauren starts driving at 60 miles per hour. They drive in opposite directions, and Lauren has a half-hour head start. How long will they be able to talk on their cell phones that have a 280-mile range? \n" ); document.write( "
Algebra.Com's Answer #258757 by mananth(16946)![]() ![]() You can put this solution on YOUR website! Jeff speed = 55mph \n" ); document.write( "lauren speed =60 mph \n" ); document.write( "... \n" ); document.write( "they are moving away from each other \n" ); document.write( "so effective speed = 60+55 = 115 mph \n" ); document.write( "range of mobile = 280 miles \n" ); document.write( "... \n" ); document.write( "t= distance/speed \n" ); document.write( "t=280/115 \n" ); document.write( "t = 2.4 hours they can be in contact on their cell \n" ); document.write( "... \n" ); document.write( "m.ananth@hotmail.ca \n" ); document.write( " |