Question 1081985

let's a number be {{{x}}} 

one- half of the number is:{{{x/2}}}

one-fourth of the number is: {{{x/4}}}

if one- half of the number is {{{3}}} more than one-fourth of the number, we have

{{{x/2=x/4+3}}}

{{{x/2-x/4=3}}}

{{{2x/4-x/4=3}}}

{{{(2x-x)/4=3}}}

{{{2x-x=3*4}}}

{{{x=12}}}

so, the number is {{{12}}}