say the regular price is "x", which is the 100% of the value, and we know it's discounted by 40%, so that means 100% - 40% = 60%, and we know as well that that value is 1200, so.
[tex]\begin{array}{ccll} amount&\%\\ \cline{1-2} x&100\\ 1200&60 \end{array}\implies \cfrac{x}{1200}=\cfrac{100}{60}\implies \cfrac{x}{1200}=\cfrac{5}{3} \\\\\\ 3x=6000\implies x=\cfrac{6000}{3}\implies x=2000[/tex]
