[tex]\begin{gathered} \frac{10}{100}\times30=3 \\ \text{Therefore, } \\ \text{Sale Price = 30-3=\$27} \end{gathered}[/tex][tex]\begin{gathered} 4) \\ \text{Discount}=\frac{55-46.75}{55}\times100=15percent \end{gathered}[/tex][tex]\begin{gathered} 5)\text{Let x be the original price} \\ \frac{x-74.75}{x}\times100=75 \\ x-74.75=0.75x \\ \Rightarrow x-0.75x=74.75 \\ 0.25x=74.75 \\ \Rightarrow x=\frac{74.75}{0.25}=299 \end{gathered}[/tex]
Therefore the original price is $299
[tex]6)\text{ selling price = 152+152}\times\frac{50}{100}=152+76=228[/tex]
the selling price is $228
