An aluminum window frame has an inner width of 2.501 m (2.5m + 1.0mm) at 25 C and the glass window inside the frame has a width of 2.500 m, also at 25 C. The coefficients of linear expansion of aluminum and glass are _Al = 2.3 x 10^-5 /C and _glass = 7.5 x 10^-6 /C. At what temperature (of both the frame and the glass) will they have the same width?