A gl slab having thickness 10 cm is placed at a distance of 5 cm in front of a convex lens of focal length?

A gl slab having thickness 10 cm is placed at a distance of 5 cm in front of a convex lens of focal length 10 cm. An object is placed at a distance of 5 cm from the lens on the other side of it. Find the image distance. (Given: μ of gl = 1.5)