AAPL wrote:Princeton Review

What is the total cost to make 7 long distance telephone calls?

1. The length of each call was at least 2 minutes.
2. The rate for long distance call is $0.32 per minute.

OA E

Target question: What is the total cost to make 7 long distance telephone calls?

When we SCAN the statements, we see the key phrase: at least
This allows us to jump straight to...

Statements 1 and 2 combined
There are infinitely many scenarios that satisfy BOTH statements. Here are two:
Case a: Each call was 2 minutes long, for a total of 14 minutes. At $0.32 per minute, the answer to the target question is the total cost = $0.32 x 14
Case b: Each call was 200 minutes long, for a total of 1400 minutes. At $0.32 per minute, the answer to the target question is the total cost = $0.32 x 1400
Since we cannot answer the target question with certainty, the combined statements are NOT SUFFICIENT

Answer: E

Cheers,
Brent