$$p+2c=295; 3c-4P=755$$
$p=\frac{-8P-625}{3}$
$c=\frac{4P+755}{3}$
$P\in \mathrm{C}$
$p=\frac{-8P-625}{3}$
$c=\frac{4P+755}{3}$
$P\in \mathrm{R}$