The original price is given as x.
The price of the book is reduced to 70% of x.
This means that the price of the book is reduced by
[tex]100-70=30[/tex]
That is 30%.
30% of x is written out as
[tex]\begin{gathered} \frac{30}{100}\times x \\ =0.3x \end{gathered}[/tex]
Therefore, the new price is
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