Question 266953
"A number" {{{N}}}
"twice that number"{{{2N}}}
"one-third of that number"{{{(N/3)}}}
"A number, twice that number, and one-third of that number are added. The result is 20" {{{N+2N+(N/3)=20}}}
<p>
{{{N+2N+(N/3)=20}}}
{{{3N(3)+(N/3)(3)=20(3)}}}
{{{9N+N=60}}}
{{{10N=60}}}
{{{10N/10=60/10}}}
{{{N=6}}}
<p>
Checking
{{{(6)+2(6)+(6/3)=20}}}
{{{(6)+(12)+(2)=20}}}
{{{(20)=20}}}