SOLUTION: Bayside insurance offers two health plans.Under plan A, Giselle would have to pay the first $70 of her medical bills, plus 40% of the rest. Under plan B, Giselle would pay the firs

Algebra ->  Coordinate Systems and Linear Equations  -> Linear Equations and Systems Word Problems -> SOLUTION: Bayside insurance offers two health plans.Under plan A, Giselle would have to pay the first $70 of her medical bills, plus 40% of the rest. Under plan B, Giselle would pay the firs      Log On


   

Question 420162: Bayside insurance offers two health plans.Under plan A, Giselle would have to pay the first $70 of her medical bills, plus 40% of the rest. Under plan B, Giselle would pay the first $130, but only 20% of the rest. For what amount of medical bills will plan B save Giselle money? Assume she has over $130 in bills.
Answer by mananth(16946) About Me  (Show Source):
You can put this solution on YOUR website!
Let the bill amount be $x
Plan A
70 + 0.4(x-70)
Plan B
130 + 0.2(x-130)
Plan B < Plan A
130+0.2(x-130)<70+0.4(x-70)
130+0.2x-26<70+0.4x-28
0.2x>130-70-26+28
0.2x>62
/0.2
x>310
The bill amount should be greater than $310