53 g of an organic compound ( x ) when heated with excess of nitric acid (concentrated) and then with silver nitrate gave 0.75 g of silver bromide…

$\displaystyle 53$ g of an organic compound $\displaystyle (\mathrm{x})$ when heated with excess of nitric acid (concentrated) and then with silver nitrate gave $\displaystyle 0.75$ g of silver bromide precipitate. $\displaystyle 1.0$ g of (x) gave $\displaystyle 1.32$ g of $\displaystyle \mathrm{CO}_2$ gas on combustion. The percentage of hydrogen in the compound $\displaystyle (x)$ is $\displaystyle \_\_\_\_$ %. [Nearest Integer] [Given: Molar mass in $\displaystyle \mathrm{g} \mathrm{mol}^{-1} \mathrm{H}: 1, \mathrm{C}: 12, \mathrm{Br}: 80, \mathrm{Ag}: 108, \mathrm{O}: 16$; Compound $\displaystyle \left.(\mathrm{x}): \mathrm{C}_{\mathrm{x}} \mathrm{H}_{\mathrm{y}} \mathrm{Br}_{\mathrm{z}}\right]$