Two metals A and B are completely soluble in each other. The melting point of A is 1200 degree C and that of B is 700 degree C. An alloy containing 75 % A and 25 % B starts solidifying at 1100 degree Cand completes solidification process at 900 degree C. An alloy containing 50% A and 50% B starts solidifying at 1000 degree C and completes solidification at 825 degree C. An alloy containing 25 % A and 75% B starts solidifying at 900 degree C and completes solidification at 750 degree C. Draw equilibrium diagram of A-B binary system and label transformation points, lines and phases. (5)