Isma wants to make some triangles from a rectangular piece of cardboard The number of triangles, x that can be produced varies directly with the length, p and width, q of the cardboard. Given the number of triangles that can be produced is 45 pieces from a cardboard that have a length of 50 cm and a width of 30 cm. Calculate the size of the cardboard in cm, if the number of triangles that Isma can produce is 60 pieces.

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