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Rasek [7]
2 years ago
8

Felix’s Feed Mill sells chicken feed for $8.00 per bag. This price is no longer high enough to create a profit. Felix decides to

raise the price. He is considering four different plans. Plan A: Raise the price by $0.10 each week until the price reaches $12.00. Plan B: Raise the price by 10 percent each week until the price reaches $12.00. Plan C: Raise the price by the same amount each week for 8 weeks, so that in the eighth week the price is $12.00. Plan D: Raise the price by $0.25 each week until the price reaches $12.00. Which plan will result in the price of the feed reaching $12.00 fastest?
Mathematics
2 answers:
Makovka662 [10]2 years ago
7 0
Hi !

First of all plan A is definitely slower than plan D on  reaching $12.00.  Plan C takes 8 weeks to do so. So, how many weeks does it take to reach $12.00 with plans B and C ?

Let n be that number.
With plan D : 8+0.25n = 12 so n = 16 : that is slower than plan C.

 Now let's consider plan B :
8*1.1^n =12, so : ln(8) +n*ln(1.1) = ln(12), therefore
n = (ln(12) - ln(8))/ln(1.1) ≈ 4.3 weeks.

So plan B will result in the price of the feed reaching $12.00 fastest.

Marat540 [252]2 years ago
6 0

Plan B is the answer

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