Bunuel wrote:

What was the revenue that a theater received from the sale of 400 tickets, some of which were sold at the full price and the remainder of which were sold at a reduced price?

To answer the question we should know:

(i) The number of tickets sold at a regular price;

(ii) The number of tickets sold at a reduced price;

(iii) The price of a regular ticket;

(iiii) The price of a reduced ticket;

(1) The number of tickets sold at the full price was 1/4 of the total number of tickets sold. 100 tickets were sold at a regular price and 300 tickets were sold at a reduced price. We know (i) and (ii) only. Not sufficient.

(2) The full price of a ticket was $25. We know only (iii). Not sufficient.

(1)+(2) We know (i), (ii) and (iii) , but we still don't know the price of a reduced ticket. Not sufficient.

Answer: E.

I understand the logic of the question and answer, but I have one question.

The portion I have highlighted in

Bold, I have noticed that you use it exceedingly well while answering these types of word problem.

Is there a process that you follow in order to come up with what information is necessary in order to determine sufficiency.

Thanks,

Hunter

Is there a process that you go through to figure out what information has to be present in order to answer

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