Question 981423
How much larger than {{{30}}} is {{{90}}}? 

find  {{{x}}}% or {{{x/100}}} of {{{90}}} that is equal to {{{30}}}

{{{(x/100)90=30}}}

{{{(x/10)9=30}}}

{{{9x=30*10}}}

{{{9x=300}}}

{{{x=300/9}}}

{{{x=33.33}}}%

so, {{{90}}} is {{{33.33}}}% larger than {{{30}}}

or, if you mean:
How much larger {{{90}}} than {{{30}}} is?

the difference between is {{{90-30=60}}}

so, we need to find out what percent of {{{30}}} gives us {{{60}}}

{{{(x/100)30=60}}}

{{{3x/10=60}}}

{{{3x=60*10}}}

{{{3x=600}}}

{{{x=600/3}}}

{{{x=200}}}%

so, {{{200}}}% of {{{30}}} added to {{{30}}} gives us {{{90}}}