



 
Hi Dylan, With just a little algebra you can solve this. Suppose the original price is $P$ dollars and the sale price is $S$ dollars. The discount is 25% so if you knew the original price then you would calculate the sale price using \[P  0.25 P = S.\] Taking out a common factor of $P$ on the left side gives \[P(1  0.25) = 0.75 P = S.\] But you know $S,$ so solve for $P.$ Penny  


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