Heat And Thermodynamics

The difference in length between two rods \(\mathrm{A}\) and \(\mathrm{B}\) is \(60 \mathrm{~cm}\) at all temperatures. If \(\alpha_{\mathrm{A}}=18 \times 10^{-6} /{ }^{\circ} \mathrm{C}\) and \(\beta_{\mathrm{B}}=27 \times 10^{-6} /{ }^{\circ} \mathrm{C}\), the lengths of the two rods are