Answer:
a.
UAL price-to-sale ratio: 0.52
LUV price-to-sale ratio: 1.38
=> The price-to-sale ration of LUV is higher than the price-to-sale ratio of UAL.
b.
UAL enterprise-to-revenue ratio: 0.69
LUV enterprise-to-revenue ratio: 1.40
=> The enterprise-to-revenue ratio of LUV is higher than the enterprise-to-revenue ratio of UAL.
c.
The comparison of enterprise-to-revenue is more meaningful because it takes into account the company's debt while price-to-sale ratio does not; which means that the comparison includes the consideration of the level of debts, thus fully account for the level of asset except cash that takes to create a dollar of revenue.
Step-by-step explanation:
Calculation notes for (a) and (b):
(a)
UAL price-to-sale ratio = 20.57/39.37 = 0.52;
LUV price-to-sale ratio: 27.44/19.94 = 1.38.
(b)
UAL enterprise-to-revenue ratio = ( 20.57 + 11.92 - 5.37)/39.37 = 0.69;
LUV enterprise-to-revenue ratio: (27.44 + 3.24 - 2.85) / 19.94 = 1.40.