Question 1095106
x, how much of the 9% to add


{{{(9x+60*3)/(x+60)=7}}}

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{{{9x+60*3=7(x+60)}}}
{{{9x+60*3=7x+7*60}}}
{{{9x-7x=7*60-3*60}}}
{{{2x=4*60}}}
{{{x=2*60}}}
{{{highlight(x=120)}}}