Lesson: Answering Certain Question Types

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My answer for the first paragraph (meteor streams) was D. I thought this was correct because we are discussing two natural phenomena right? First, a meteor stream is described, then a meteor shower is explained, and t is also described how these two are related: that a meteor shower occurs when earth passes through a meteor stream. Where am I going wrong here? (thanks for your help)
gmat-admin's picture

Aside: This is an official GMAT question.

In their solution, the test-makers state "only a single phenomenon is described in the passage," but I think you have raised a valid point. It seems that the passage describes both a meteor stream and meteor shower is explained.

However, I wouldn't say that the passage demonstrates a way to measure BOTH of them (as answer choice D states)

would you plz summarize the first passage (meteor stream)
thanks
gmat-admin's picture

How about: Model confirms broadening theory but not dense center theory.

Or I might even write: Model confirms 1 theory but not other.

https://gmatclub.com/forum/recent-years-have-brought-minority-owned-businesses-in-the-85004.html?fl=similar
question 7 why not b sir??
gmat-admin's picture

Question link: https://gmatclub.com/forum/recent-years-have-brought-minority-owned-busi...

7. Which of the following, if true, would most weaken the author’s assertion that, in the 1970’s, corporate response to federal requirements (lines 18-19) was substantial
(A) Corporate contracts with minority-owned businesses totaled $2 billion in 1979.
(B) Between 1970 and 1972, corporate contracts with minority-owned businesses declined by 25 percent.
(C) The figures collected in 1977 underrepresented the extent of corporate contracts with minority-owned businesses.
(D) The estimate of corporate spending with minority-owned businesses in 1980 is approximately $10 million too high.
(E) The $1.1 billion represented the same percentage of total corporate spending in 1977 as did $77 million in 1972.

Here's the portion that deals with the above question:
"Corporate response appears to have been substantial. According to figures collected in 1977, the total of corporate contracts with minority businesses rose from $77 million in 1972 to $1.1 billion in 1977."

So, contracts rose from 1972 to 1977.
Answer choice B talks about what happened BEFORE 1972, so it has no bearing on the rise from 1972 to 1977.

Answer choice E, however, suggests that the increase from 1972 to 1977 was not an increase at all, if you look at the PROPORTION of all corporate spending.
So, for example, if in 1972, $77 million represented 10% of all corporate spending, and in 1977, $1.1 billion represented 10% of all corporate spending, then one might argue that corporate response to federal requirements was NOT substantial.

Does that help?

Cheers,
Brent

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