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PROBLEM 51, 53 and 80

Problem Solving — algebra and arithmetic (GMAT Focus Edition)
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by didieravoaka » Fri Jan 30, 2015 7:41 pm
Hi guys,

Does someone can help me understand these problems above?

PROBLEM 51: The way I understand it, it appears to be answer E instead of B

PROBLEM 53: In this problem I don't understand "the average of the second set of numbers [whish is ] 30-5=25 "

PROBLEM 80: Is there another way to understand that problem

Thank you guys.

Marc.
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Source: — Quantitative Reasoning |

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by [email protected] » Fri Jan 30, 2015 11:05 pm
Hi Marc,

Welcome to the Forums. Here are a couple of suggestions that will probably help you to get the most of out of this site:

1) Post one question per thread. Since you're interested in learning more about 3 specific GMAT questions, you should post 3 different posts. Make sure to post each in the proper Forum (PS, DS, etc.)

2) It's not clear which questions you're talking about. Are you asking about questions from the OG13? It will be easier for everyone to respond (the Experts and other Site Visitors) if you post the full question (and the answer choices) to save everyone the time of having to look the question up.

GMAT assassins aren't born, they're made,
Rich
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