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$x$ is $20$ percent of $t$.

t=?; //to compute


compressed = 64;
uncompressed = (100 / 20) * 64;

//is it correct?

How can I compute $t$?

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@Harold, Sometimes a problem has multiple solutions. – kannanrbk Apr 19 '13 at 18:32
@Harold , All of them are not know all the things. It's simple and trivial , I know. It's depend on the scenario. – kannanrbk Apr 19 '13 at 18:38
I have deleted Harold's completely inappropriate comment. @Harold: Any further such incident will be cause for a suspension. – Zev Chonoles Apr 19 '13 at 19:50
up vote 2 down vote accepted

x is 20% of t means: $x=0.2\cdot t \quad \implies  \quad t=5\cdot x$

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