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Revenue= Number of tickets sold * Cost of ticket

Now let's analyse each option:
A. Statement 1 alone: We do not know the number or proportion of tickets sold. We cannot calculate revenue. Hence, not sufficient.

B. Statement 2 alone: Even though we know the proportion of tickets sold, we do not know the prices, hence we cannot calculate the revenue. Thus, insufficient.

C. Combine statement 1 and statement 2:
Cost of standard ticket = P
Cost of premium ticket = 2P + m
Number of standard tickets sold = 3k
Number of premium tickets sold = 4k

Total Revenue = Revenue from premium ticket + revenue from standard ticket
= ((2P+m)*4k) + (P*3k) = 11Pk + 4mk = k(11P+4m)
Revenue from premium ticket = 8Pk + 4mk = k(8P +4m)

Ratio= (8P +4m)/ (11P+4m)

Now, to decide whether this is less than or greater than 75% or 3/4:
[ (8P +4m)/ (11P+4m) ] ◻ [3/4]
=> (32 P +16m) ◻ (33P+12m)
=> 4m ◻ P
=> m ◻ (P/4)

Hence, depending on whether m is less than or greater than P/4, it will determine whether premium tickets contribute to 75% of the revenue or not. If m > P/4 (that is, cost of premium tickets is more than 2.25 times the cost of standard tickets) then it would contribute to more than 75%. If m< P/4 ( that is, cost of premium tickets is between 2-2.25 times the cost of standard tickets) then it would contribute less than 75%.Therefore, E is the answer.

Hope this helps! :)
Great attempt! But I see you made a slight mistake at the end. Here question is " Was the revenue from Premium tickets greater than 75 percent of the concert hall’s total ticket revenue?"

So, as you have successfully inferred through equation that it depends on cost of premium ticket with respect to standard ticket.

if ratio is between 2 - 2.5 then, answer is No

if ratio is above that then, answer will be yes

As, we don't know the ratio here precisely, so we can't definitely answer with both the statements. So our answer here is E.

Thanks.
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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.
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