This is a really clean Data Sufficiency question that tests whether you can set up a ratio comparison with unknowns — and recognize when an inequality leaves the answer ambiguous.
Key concept being tested: Revenue ratios with mixed constraints (one inequality, one quantity ratio), and identifying when two statements together are still insufficient.
Setup:
Let Standard ticket price = S.
Since Premium costs more (no specific amount given), let Premium price = k × S, where k > 0.
- Revenue from Premium = (number of Premium sold) × kS
- Revenue from Standard = (number of Standard sold) × S
The question asks: Is Premium revenue > 75% of total revenue?
Step 1 — Evaluate Statement (1): Each Premium ticket costs MORE than twice the Standard ticket cost.
This tells us k > 2. But we have no information about how many of each ticket was sold. We can't compute a revenue ratio. Not sufficient.
Step 2 — Evaluate Statement (2): Hall sold 4 Premium tickets for every 3 Standard tickets.
Now we know the quantity ratio: 4 Premium to 3 Standard. But we don't know k (the price ratio). Not sufficient.
Step 3 — Combine (1) + (2):
- Premium revenue = 4kS
- Standard revenue = 3S
- Total revenue = 4kS + 3S = S(4k + 3)
- Premium fraction = 4k / (4k + 3)
Is this > 3/4?
Cross-multiplying: 16k > 12k + 9 → 4k > 9 → k > 2.25
From Statement 1, we know k > 2. But k could be 2.1 (giving Premium fraction ≈ 74%, less than 75%) or k could be 3 (giving Premium fraction = 12/15 = 80%, greater than 75%). Both scenarios are consistent with the given information.
We cannot determine a definitive Yes or No.
Answer: E
Common trap: Many students assume that since Premium must cost more than twice as much AND sold more tickets (4 vs 3), Premium revenue must dominate. That intuition is right in direction but not definitively above the specific 75% threshold. The cutoff is k = 2.25, and Statement 1 only guarantees k > 2 — leaving a gap of uncertainty between 2 and 2.25.
Takeaway: Whenever a DS question asks about a specific threshold (here, 75%), always test boundary values — one just below and one just above — to check if the combined statements still allow both outcomes.