Question 848741
This is as if you cut 110 into one-hundred equal parts and find fifteen of those parts and say how much this is.


15% means {{{highlight_green(15/100)}}}.


Setting the question as a proportion:
{{{15/100=v/110}}};
Examine that equation for a few seconds, and then read the top given description again.


You want those two fractions to be equal.  As arranged, v is fifteen percent of 110.  If you multiply the left member AND the right member by 110, you have v on one side and a numeric expression which you can compute on the other side.  Do the computation and you have the finished value for v.
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{{{15/100=v/110}}}
{{{110(15/100)=110(v/110)}}}
{{{11(15/10)=(110/110)v}}}
{{{(11*15/10)=1*v=v}}}
{{{(11*3*5)/(2*5)=v}}}
{{{(11*3)/2=v}}}
{{{33/2=v}}}
{{{v=16.5}}}