A metal rod (metal A) that is 30.0 cm long expands by 0.0750cm when its temperature is raised from 00 C to 1000 C. A rod of a different material (metal B) and of the same length by 0.040cm for same raise in temperature. A third rod, also 30.0cm long, is made up of pieces of each of the above metals paced end-to-end and expands 0.0550cm between 0 0 C and 1000 C. Find the length of each portion of the composite bars.