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Question 574803: Please someone explain this I have a very hard time with percentages
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
Answer by ankor@dixie-net.com(22740)   (Show Source):
You can put this solution on YOUR website! Bayside insurance 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
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Let x = amt of med bills she had, have to be at least $240
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Use the decimal equiv of the per cents given.
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C(x) = Cost in terms of x
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Plan A: C(x) = .35(x-200) + 200
Plan B: C(x) = .20(x-240) + 240
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" For what amount of medical bills will plan B save Giselle money?"
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Plan B less than Plan A
.20(x-240)+240 < .35(x-200) + 200
.20x - 48 + 240 < .35x - 70 + 200
.20x + 192 < .35x + 130
.20x - .35x < 130 - 192
-.15x < -62
We need x to be positive, multiply both sides by -1, this reverses the inequality sign
.15x > 62
Divide both sides by .15
x > 62/.15
x > $413.33
we can say:
"When her medical expenses exceed $413.33, plan B is the better plan"
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Did I explain it sufficiently for you to understand what went on here?
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