Search found 2214 matches


Re: Scientists now suspect that imperial mammoths of the Pleistoscene period were wiped out not by human predation, as w

In this sentence, there's a comparison between two types of mammoths; the imperial mammoths wiped out by climate change and the mammoths that were in the earlier period which was wiped out by human predators. Option A - correct This correctly compares because it uses "as" which allows the writer use...


Re: If none of the students are ambidextrous, what percentage of the 20 stundents in Mr. Henderson's class are left-hand

Target question => what percentage of the 20 students in Mr. Henderson's class are left-handed? Total students = 20 Statement 1: Of the 12 girls in the class, 25% are left-handed. Total girls = 12; left-handed girls = 25% * 12 = 3 Right-handed girls = 12 - 3 = 9 Total boys = 20 - 12 = 8 However, the...


Re: During a 6-day local trade show, the least number of people registered in a single day was 80. Was the average...

Least no. of people registered in a day = 80 Target question => Was the average (arithmetic mean) number of people registered per day for the 6 days greater than 90? $$Mean=\frac{total\ no.\ of\ people\ registered\ for\ the\ 6\ days}{6}$$ Total no. of people registered > (90 * 6 = 540) Statement 1=>...


Re: By sucking sap from the young twigs of the hemlock tree, tree growth is retarded by the woolly adelgid, causing need

In this sentence, the clause starting the sentence is a modifier for the noun phrase "the woolly adelgid" and the second modifier "which causes needles to change color from deep green to grayish-green" in the sentence describes the result of the clause "the woolly adelgid retards tree growth" and so...


Re: The recent global boom in the market price for scrap steel and aluminum leads to a sudden rise in the theft of every

In the sentence, the phrase 'recent global boom' explains something that began in the past and is continuing into the present. Hence, the present perfect tense "has led" is much more acceptable than the simple present tense "leads." Also, "such as" is preferred to "like" when introducing examples. O...


Re: Even as Scandinavian furniture has taken a wide portion of the North American market, American brands are barely vis

In this question, 'a situation' is modifying the fact that American brands are barely visible in the furniture industry in Europe and this has led to frustration for the executives. Option A - correct The modifier 'a situation' modifies the previous clause correctly. It also makes use of the correct...


Re: Often sold over the counter one hundred years ago, pharmacists now refuse to sell cocaine. A) Often sold over the c

In this sentence, the underlined group of words is supposed to modify the noun cocaine in the main clause. Option A - incorrect The phrase is modifying the noun 'pharmacists' instead of 'cocaine' making it seem like pharmacists were sold over the counter. Option B - incorrect It has the same issue a...


Re: Before 1986 physicists believed they could describe the universe in terms of four universal forces. Experiments then

This argument explains that before physicists could believe they could describe the universe in 4 dimensions but after series of experiments, it was discovered that there was a fifth force that could perform better. The conclusion is that there's a fifth force in the universe. Option A - incorrect T...


Re: Kim purchased n items from a catalog for \(\$8\) each. Postage and handling charges consisted of \(\$3\) for the fir

Kim purchases n items at $8 each, postage and handling = $3first item, and $1 for each additional item. Total dollar amount for Kim's purchase = total price total postage and handling. Total price = $8n For postage and handling = 3 + (n-1) = 3 + n - 1 = $ (n+2) Total dollar amount = $8n + $(n+2) = 8...


Re: A total of 30 percent of the geese included in a certain migration study were male. If some of the geese migrated du

Total male = 30% Female = 100 - 30 = 70% From total geese migrated, 20% were made; female = 100 - 20 = 80% Migration rate for geese of a certain sex = (no. of geese of that sex migrating) / (total number of geese of that sex) $$Migration\ rate\ for\ male=\frac{0.2}{0.3}\ \frac{\left(from\ 20\%\right...


Re: On Jane's credit card account, the average daily balance for the 30-day billing cycle is the average (arithmetic mea

$$Average\ balance\ at\ the\ end\ of\ 30\ days=\frac{sum\ of\ daily\ balance}{30\ days}$$ Jane's credit card account had a balance of $600, and Jand made a payment of $300 during the cycle. So, we can say the balance on the credit card account is either $600 or $300 and once it decreases to $300, it...


Re: If the average (arithmetic mean) of the five numbers \(x, 7, 2, 16\) and \(11\) is equal to the median of five numbe

The numbers are x, 7, 2, 16, 11 $$\frac{x+7+2+16+11}{5}=median$$ Target question: what is the value of x? Statement 1: 7 < x < 11 The possible values of x include 8, 9 and 10 Order of set => 2, 7, x, 11, 16. Irrespective of the value of x, it will still be the median. $$Therefore,\ \frac{x+7+2+16+11...


Re: Working at their individual same constant rate, 24 machines can complete a certain production job in 10 hours when t

24 machines can complete a production job in 10 hours. Given that all machines can work at the same constant rate, assuming each machine can complete 1 unit of the job per hour. Then, total job = 24 * 10 = 240 units On a certain day, 8 machines did not work for the first 2 hours, so, only (24 - 8 = ...


Re: Mathematics, physics, and chemistry books are stored on a library shelf that can accommodate 25 books. Currently,

The shelf can accommodate 25 books 20% of the shelf spots remain Total books on the shelf = (100 - 20)% * 25 = 80% * 25 = 20 Let the total number of Chemistry books = x Total number of Physics books = x + 4 Since the total no. of books = 20 Then, x + (x+6) + [12 (x+4)] = 20 2x + 4 + 2x + 8 = 20 4x +...


Re: Which of the following most logically completes the passage below? Heavy rains during Centralia’s corn planting sea

in this argument, the question asked why is it that some farmers cannot plant soya beans in place of corns which they couldn't plant earlier because of the excessive rainfall. Option A - incorrect It refers to the argument that says some farmers were unable to plant corn because of the excessive rai...