Answer:
Step-by-step explanation:
[tex]cost \ price = X\\Deduction = P \%\\Deduction \ Price = P \% of X = \frac{P}{100} \times X = \frac{XP}{100} \\\\Cost \ price \ after \ deduction = X -\frac{XP}{100}[/tex]
OR SIMPLIFY FURTHER
[tex]X - \frac{XP}{100} = X( 1 - \frac{P}{100} )[/tex]