Consider the hypothetical eutectic phase diagram for metals A and B as shown in Figure 2. Assume that (1) a and B phases exist at the A and B extremities of the phase diagram, respectively, (2) the eutectic composition is 71.9 wt%B: 28.1 wt% A; and (3) the composition of the a phase at the eutectic temperature is 8 wt% B: 92 wt% A Determine ii) The composition of an alloy (C) and the composition of B (Cs) that yielded in primary B Estimate the total mass fractions of 0.419 and 0.865, respectively. [15 Marks] L BEL B Tecperature + 20 10 60 Weight percent B