Answer:
C. $68
Step-by-step explanation:
all of the original prices were marked down by 80% to get their sale prices.
[tex]\frac{part}{whole} = \frac{part}{whole}\\\\\frac{80}{100} = \frac{x}{85} \\85 x 80 = 6,800\\6,800/100 = 68[/tex]
