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winnie20

Using The Formula S=R-rR, Can You Find Another Formula That Represents The Discount Rate?

Hint: Solve for r.

asked 6 months ago

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ADVAITHA

I don't know whether this is right:
S=R-rR
S+rR=R
rR=R-S
r=R-S/R

answered 6 months ago   

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Jannifer

Let S - Sale price

R = Original price

r= Discount rate

So


S = R-rR

Taking R common

S= R (1-r)

S/R = (1-r)

0 = 1 - S/R -r

r = 1- S/R >>> answer


answered 6 months ago   

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