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From what is only given...
X-0.3X=145, where X is the list price of new product before 30% discount.
∴ Product list price before discount ≈ $208
Hope this helps!
I am not a business merchandise/marketing/pricing...
From data set, we can calculate: n=12; ∑=52118; Xbar=4343.2; S=394.91
For 95%CL margin of error: Za/2*(S/√n)
For critical value, Za/2: 0.95/2 = 0.475... look-up in z-value table... 1.96
For StndError, S/√n: 394.91/√12 = 114.00
Margin of error = 1.96*114=±223.44
Solving for r will confirm equation balance.
Divide by 5 from each side to make equation 4=(32/r).
Multiply r on each side to make equation 4r=32.
Divide by 4 on each side to make equation r=8.
Now substitue r with 8 in original equation - we can see that 20=20.
Equation is balanced...