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It takes Amy between 6 and 7 minutes to grill a steak, and

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by BTGmoderatorDC » Sun Jul 14, 2019 7:09 pm

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00:00

Answers

A

B

C

D

E

Stats

Difficulty—

It takes Amy between 6 and 7 minutes to grill a steak, and she can only grill one steak at a time. She does not need to take breaks between steaks. Can Amy finish grilling all the steaks needed for her party before her guests arrive?

(1) Amy needs to grill four steaks for her party.

(2) Amy's guests will arrive in half an hour.

OA C

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Source: — Data Sufficiency |

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by Ian Stewart » Mon Jul 15, 2019 5:38 am
Statement 1 is not sufficient because we don't know how much time she has, and Statement 2 is not sufficient because we don't know how many steaks she needs. Using both, it will take her at most 4*7 = 28 minutes to grill four steaks, so if she has 30 minutes, she has enough time, and the two Statements together are sufficient and the answer is C.
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