Given that–
The cost of a book costs 30$. Now its 80% of the original cost.
- Original cost of book 30 $
– ★ 80% of 30
[tex]\red{\twoheadrightarrow\sf \dfrac{80}{100} \times 30}[/tex]
[tex]\twoheadrightarrow\sf \dfrac{8\cancel{0}}{1\cancel{0}\cancel{0}} \times 3\cancel{0}[/tex]
[tex]\twoheadrightarrow\sf 8 \times 3 [/tex]
[tex]\red{\twoheadrightarrow\sf 24} [/tex]
- Therefore, new price will be 24 $.
