# When did it get upgraded?

Algebra Level 3

$\left\lfloor x+0.19 \right\rfloor +\left\lfloor x+0.20 \right\rfloor +\left\lfloor x+0.21 \right\rfloor + \ldots + \left\lfloor x+0.91 \right\rfloor =542$

If $x$ satisfies the equation above, find the value of $\left\lfloor 100x \right\rfloor$.

Note that $\left\lfloor X \right\rfloor$ denote the floor function of $X$.

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