Question 1175630
{{{(0.18*(20))/(20 + x)}}} = 0.10
<pr>
{{{3.6/(20 + x)}}} = 0.10
<pr>
0.10(20 + x) = 3.6
<pr>
2 + 0.10x = 3.6
<pr>
0.10x = 1.6
<pr>
x = 16