Question 841362
{{{(1/4+1/5+1/10+1/9+1/4+X)=1}}}
Multiply both sides by {{{4*5*9}}}
{{{45+36+18+20+45+180X=180}}}
{{{164+180X=180}}}
{{{180X=16}}}
{{{X=16/180=4/45}}}
{{{H=(4/45)(23400)}}}