document.write( "Question 574803: Please someone explain this I have a very hard time with percentages\r
\n" );
document.write( "\n" );
document.write( "Bayside insurence offers two health plans. Under the first plan Giselle would have to pay the first $200 and 35%. Under plan B she would pay the first $240 and 20% of the rest. For what amount of medical bills will plan B save Giselle money? Assume her bills were over $240 \n" );
document.write( "
Algebra.Com's Answer #369300 by ankor@dixie-net.com(22740)![]() ![]() You can put this solution on YOUR website! Bayside insurance offers two health plans. \n" ); document.write( "Under the first plan Giselle would have to pay the first $200 and 35%. \n" ); document.write( "Under plan B she would pay the first $240 and 20% of the rest. \n" ); document.write( " For what amount of medical bills will plan B save Giselle money? \n" ); document.write( " Assume her bills were over $240 \n" ); document.write( ": \n" ); document.write( "Let x = amt of med bills she had, have to be at least $240 \n" ); document.write( "; \n" ); document.write( "Use the decimal equiv of the per cents given. \n" ); document.write( ": \n" ); document.write( "C(x) = Cost in terms of x \n" ); document.write( ": \n" ); document.write( "Plan A: C(x) = .35(x-200) + 200 \n" ); document.write( "Plan B: C(x) = .20(x-240) + 240 \n" ); document.write( "; \n" ); document.write( "\" For what amount of medical bills will plan B save Giselle money?\" \n" ); document.write( "; \n" ); document.write( "Plan B less than Plan A \n" ); document.write( ".20(x-240)+240 < .35(x-200) + 200 \n" ); document.write( ".20x - 48 + 240 < .35x - 70 + 200 \n" ); document.write( ".20x + 192 < .35x + 130 \n" ); document.write( ".20x - .35x < 130 - 192 \n" ); document.write( "-.15x < -62 \n" ); document.write( "We need x to be positive, multiply both sides by -1, this reverses the inequality sign \n" ); document.write( ".15x > 62 \n" ); document.write( "Divide both sides by .15 \n" ); document.write( "x > 62/.15 \n" ); document.write( "x > $413.33 \n" ); document.write( "we can say: \n" ); document.write( "\"When her medical expenses exceed $413.33, plan B is the better plan\" \n" ); document.write( ": \n" ); document.write( ": \n" ); document.write( "Did I explain it sufficiently for you to understand what went on here? \n" ); document.write( " |