document.write( "Question 156306: A cellular telephone company has two plans. Plan A charges $11 a month and $0.12 per minute. Plan B charges $20 a month and $0.10 per minute. After how much time, to the nearest minute, will the cost of Plan A be equal to the cost of Plan B? Please help, Thanks! \n" ); document.write( "
Algebra.Com's Answer #115107 by nerdybill(7384)![]() ![]() You can put this solution on YOUR website! . \n" ); document.write( "Let x = minutes of usage when both plans are equal in cost \n" ); document.write( ". \n" ); document.write( "Plan A costs (per month): 11+.12x \n" ); document.write( "Plan B costs (per month): 20+.10x \n" ); document.write( ". \n" ); document.write( "11+.12x = 20+.10x \n" ); document.write( "11+.02x = 20 \n" ); document.write( ".02x = 9 \n" ); document.write( "x = 9/.02 \n" ); document.write( "x = 450 minutes\r \n" ); document.write( "\n" ); document.write( " \n" ); document.write( " |