Question 1205965

 the table lamps : {{{x}}}
the standing lamps: {{{y}}}

if {{{60}}}% of the table lamps were 30 more than {{{80}}}% of the standing lamps, we have

{{{0.60x=0.80y+30}}}....solve for {{{x}}}

{{{x=0.80y/0.60+30/0.60}}}

{{{x=1.33333y + 50}}}.....eq.1


 if there were a total of{{{ 155}}} table and standing lamps in the warehouse at first, we have


{{{x+y=155}}}....eq.2, substitute {{{x}}} from eq.1

{{{1.33333y + 50+y=155}}}

{{{2.33333y =155-50}}}

{{{y =105/2.33333}}}

{{{y=45}}}


go to

{{{x+y=155}}}....eq.2, substitute{{{ y}}}

{{{x+45=155}}}

{{{x=155-45}}}

{{{x=110}}}

there were {{{110 }}}the table lamps

 if {{{30}}}% of them were removed from the warehouse, it will be

{{{0.30*110=33 }}}

so, {{{110-33=77}}}  table lamps are left