Concept: The question tests on the application in Percentage problem in a DS format
Jills expenditure on clothes = 2000 and on shoes = 1/2 of that on clothes = 1/2 * 2000 = 1000
We need the total income to get to the answer.
Statement 1: Jill's income last year was $40000
This gives us the answer. % = (2000 /40000) * 100 = 5%
Answer options could be A or D
Therefore Statement 1 Alone is Sufficient.
Statement 2: Jill's income last year was 40 times as much as she spent on shoes
This gives us Jills income as 40 * 1000 = 40,000
Therefore Statement 2 Alone is Sufficient.