To determine how Y is related to X, we analyze the information given in the statements.
With the given information, Statement 2 alone provides enough detail that Y is the mother of X. Therefore, the correct answer is that "statement (2) alone is sufficient to answer the question."
If the price of a commodity increases by 25%, by what percentage should the consumption be reduced to keep the expenditure the same?
A shopkeeper marks his goods 40% above cost price and offers a 10% discount. What is his percentage profit?