Refer to the segment report of International Corporation in Appendix A. Calculate for each product segment for \(19 \times 0\) and 19X1:

a Segment sales to unaffiliated customers as a percentage of combined (or consolidated) segment sales to unaffiliated customers.

b Segment operating profit as a percentage of segment sales to unaffiliated customers.

c Segment operating profit as a percentage of identifiable segment assets at the end of each year.

d What changes can you see in the profitability of the three segments of International Corporation between 19X0 and 19X1?