Question 1183016


let the original cost of article be {{{x}}}
the cost of an article is raised by {{{9}}}% or {{{0.09}}} to {{{654}}}

then

{{{x+0.09x=654}}}

{{{1.09x=654}}}

{{{x=654/1.09}}}

{{{x=600}}}

the original cost of article is {{{600}}}