A point object, 'O' is placed in front of two thin symmetrical coaxial convex lenses $\mathrm{L}_{1}$ and $\mathrm{L}_{2}$ with focal length $24 \mathrm{~cm}$ and $9 \mathrm{~cm}$ respectively. The distance between two lenses is $10 \mathrm{~cm}$ and the object is placed $6 \mathrm{~cm}$ away from lens $\mathrm{L}_{1}$ as shown in the figure. The distance between the object and the image formed by the system of two lenses is __________ $\mathrm{cm}$.