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ozzi
3 years ago
11

The sale price S (in dollars) of an item is given by the formula S=L−rL, where L is the list price (in dollars) and r is the dis

count rate (in decimal form).
R=1- S/L

The list price of the shirt is $30. What is the discount rate?
Mathematics
2 answers:
il63 [147K]3 years ago
8 0

Answer:

Discount rate of the item will be r=1-\frac{S}{30}.

Step-by-step explanation:

The given formula is S = L - rL

Here S = sale price of an item

r = Discount rate

L = List price of the item

S - L = - rL

L - S = rL

r=\frac{1}{L}(L-S)

r=1-\frac{S}{L}

Now we have to calculate the discount price of the shirt when it's list price is $30.

By replacing L = 30 in the given formula

r=1-\frac{S}{30}

Discount rate of the item will be r=1-\frac{S}{30}.

ser-zykov [4K]3 years ago
7 0

The sale price S (in dollars) of an item is given by the formula

S=L−rL , where L is the list price (in dollars) and r is the discount rate.

Since, S = L -rL

rL = L -S

r = \frac{L-S}{L}

r = 1-\frac{S}{L}

Since, the listed price of the shirt is $30, we have to find the discount rate.

Therefore, r = 1-\frac{S}{30} is the discount rate.

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