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An object is at the 10 cm mark, the 20 cm convex lens (objective) is at...

An object is at the 10 cm mark, the 20 cm convex lens (objective) is at the 80 cm mark and the 10 cm lens (eyepiece) is placed at the 114 cm mark. What is the maximum magnification this telescope could provide? What would you have to change to improve the magnification of your telescope?
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