A melts at 400 and B melts at 700 degrees Celsius respectively, Draw the equilibrium diagram to the scale. Consider the alloy containing 60% B, 

Calculate:

1. The temperature at which solidification begins 

2. The ratio of phases present at 300 degrees Celsius:

% B in the Alloy	First Arrest point	Second Arrest point	Third Arrest point
10	360	250	--
30	250	--	--
50	400	250	--
70	530	250	--
90	650	400	160