GMAT - Graduate Management Admission Test Quantitative Section
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Kelly and Jody packed boxes with books. If Jody packed 60% of the total number of boxes, what was the ratio of the number of boxes Kelly packed to the number that Jody packed?
Answer & Explanation:
Answer: Option E
Explanation:
If Jody packed 60% of the boxes then Kelly packed 40%. The ratio of the number of boxes Kelly packed to the number Jody packed is thus 40%/60%=2/3
The temperatures in degrees Celsius recorded at a certain specific point in the evening in various parts of a country were 10°, 5°, -2°, -1°, -5°, 15°. What is the median of these temperatures?
Answer & Explanation:
Answer: Option C
Explanation:
To get the median first we need to sort the temperatures in ascending order:
-5°, -2°, -1°, 5°, 10°, 15°
When the number of values in a list is even, the median is the average of the middle two values in the list in this case -1 and 5, i.e. 2.
y=248-398x Which of the following values of x gives the greatest value of y in the equation above?
Answer & Explanation:
Answer: Option E
Explanation:
This is quite simple. Just by looking at the values they are all positive except two. If you enter any of the values instead of x you will get a negative y. By entering 0 you already get to positive=248. But the correct answer is -1 since this equals y=248-(398*(-1))=248+398. This is the greatest value.
The ratio of length to width of a rectangular showroom window is 3.3 to 2. If the width of the window is 8 feet, what is the approximate length of the display in feet?
Answer & Explanation:
Answer: Option C
Explanation:
Letting L be the length of the window, the proportion for the ratio of the length to the width can be expressed in the following equation:
3.3/2=L/8
26.4=2L
13.2=L
A certain country had a total annual expenditure of $1.2x10^12. If the population of the country was 240 million last year, what was the per capita expenditure?
Answer & Explanation:
Answer: Option E
Explanation:
In scientific notation 240 million is 2.4x10^8. So the per capita expenditure was:
($1.2x10^12)/(2.4x10^8)=($1.2)/(2.4)x10^12-8=$0.5x10^4=$5000