Question 403012


{{{200+0.10x = 400+.05x}}}
{{{0.10x - 0.05x = 400 - 200}}}

{{{0.05x = 200}}}

{{{x = 200/0.05 }}}copies

{{{x = 4000}}} copies


200 + 0.10*4000 = 200 + 400 = $600
400+0.05*4000 = 400+200 = $600

charges are the same