  Renormalisation Group Equation(RGE) for color and top couplings sector of
MSSM has been solved. The mass of the top comes out to be 180.363$\pm$ 10.876
GeV and $\beta_{top}$=$\frac{\pi}{2}$. It is conjectured that the masses of the
other 11 fermions and the CKM phase angle $\phi$ can be theoretically
estimated. The results confirm the fact that the quarks and leptons have been
created having equal mass $\sim$ 115 GeV at the MSSM GUT scale $\sim ~2.2\times
10^{16}$ GeV.
