SOLUTION: we use these formulas...S=CrC and S=R-R Bedroom set with a regular price of $1395.00 is on sale for $995.00. Find the discount rate .Round answer to the nearest tenth of a %.

Algebra ->  Customizable Word Problem Solvers  -> Misc -> SOLUTION: we use these formulas...S=CrC and S=R-R Bedroom set with a regular price of $1395.00 is on sale for $995.00. Find the discount rate .Round answer to the nearest tenth of a %.      Log On

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Question 167793: we use these formulas...S=CrC and S=R-R
Bedroom set with a regular price of $1395.00 is on sale for $995.00. Find the discount rate .Round answer to the nearest tenth of a %.
Answer by jim_thompson5910(35256) About Me  (Show Source):
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In this case, we'll use the discount formula S=R-rR. Also, take note that the regular price is R=1395.00 and the selling price is S=995.00. The goal is to find "r"


S=R-rR Start with the given formula


995.00=1395.00-r%281395.00%29 Plug in R=1395.00 and S=995.00


995.00%2Br%281395.00%29=1395.00 Add -r%281395.00%29 to both sides.


r%281395.00%29=1395.00-995.00 Subtract 995.00 from both sides.


r%281395.00%29=400 Subtract.


r=400%2F%281395.00%29 Divide both sides by 1395.00 to isolate "r"


r=0.2867 Divide.


So the answer in decimal form is r=0.2867. Now multiply this number by 100 to get 0.2867%2A100=28.67%


So the discount rate (rounded to the nearest tenth) is 28.7%