Answer :
From the givens, we know that 1/3 of the original cost is $255.75
Assume that the original price of the stereo is y, therefore:
(1/3) y = 255.75
y = 3 x 255.75
The original price of the stereo is $767.25
Assume that the original price of the stereo is y, therefore:
(1/3) y = 255.75
y = 3 x 255.75
The original price of the stereo is $767.25