When an object is shot from the bottom of a long smooth inclined plane kept at an angle\[60{}^\circ \] with horizontal, it can travel a distance \[{{x}_{1}}\]along the plane. But when the inclination is decreased to \[30{}^\circ \] and the same object is shot with the same velocity, it can travel \[{{x}_{2}}\]distance. Then \[{{x}_{1}}:{{x}_{2}}\]will be: [NEET 5-5-2019]