Error probabilities of a uniform test

Let $X$ be a single observation drawn from $U(0,\theta)$ distribution, where $\theta\in\{1,2\}$. To test $H_{0}:\theta=1$ against $H_{1}:\theta=2$ consider the test procedure that rejects $H_{0}$ if and only if $X>0.75$. If the probabilities of Type-I and Type-II errors are $\alpha$ and $\beta$, respectively, then $\alpha+\beta$ equals __________ (round off to two decimal places)