Consider a hypothetical phase diagram in which component Ame lts at 900C, component B melts at 1000C, and there is an invariant reaction at 600C. The solubility of B in is known to increase from almost nil at room temperature to a maximum of 10%. When an alloy containing 30% B is cooled under equilibrium conditions just above 600C, a two-phase mixture is present, 50% and 50% liquid. When the alloy is cooled just below 600C, the alloy contains two solid phases, and . The fraction of is 0.75. After cooling under equilibrium conditions to room temperature, the amount of in the mixture decreases to 68%. Sketch the equilibrium phase diagram.