SOLUTION: The sale Price S (in dollars) of an item is given by the formula S=L - rL, where L is the lost price (in dollars) and r is the discount rate (in decimal form) a. Solve the formu

Algebra ->  Equations -> SOLUTION: The sale Price S (in dollars) of an item is given by the formula S=L - rL, where L is the lost price (in dollars) and r is the discount rate (in decimal form) a. Solve the formu      Log On


   



Question 991207: The sale Price S (in dollars) of an item is given by the formula S=L - rL, where L is the lost price (in dollars) and r is the discount rate (in decimal form)
a. Solve the formula for r

Found 2 solutions by stanbon, solver91311:
Answer by stanbon(75887) About Me  (Show Source):
You can put this solution on YOUR website!
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 (in decimal form)
a. Solve the formula for r
S = L - rL
rL = L-S
r = (L-S)/L = 1 - (S/L)
-----------------------------------
b. The list price of the shirt is $30. What is discount rate?
r = 1 - (S/30)

-------------
Cheers,
Stan H.

Answer by solver91311(24713) About Me  (Show Source):
You can put this solution on YOUR website!












John

My calculator said it, I believe it, that settles it